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Laboratory Corp of America Holdings – ‘10-Q’ for 9/30/15 – ‘EX-101.SCH’

On:  Friday, 10/30/15, at 1:45pm ET   ·   For:  9/30/15   ·   Accession #:  920148-15-133   ·   File #:  1-11353

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  As Of               Filer                 Filing    For·On·As Docs:Size

10/30/15  Lab Corp of America Holdings      10-Q        9/30/15   68:7.7M

Quarterly Report   —   Form 10-Q   —   Sect. 13 / 15(d) – SEA’34
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: 10-Q        Quarterly Report                                    HTML    640K 
 2: EX-12.1     Statement re: Computation of Ratios                 HTML     49K 
 3: EX-31.1     Certification -- §302 - SOA'02                      HTML     26K 
 4: EX-31.2     Certification -- §302 - SOA'02                      HTML     26K 
 5: EX-32.1     Certification -- §906 - SOA'02                      HTML     23K 
46: R1          Document and Entity Information Document            HTML     40K 
35: R2          Condensed Consolidated Balance Sheets (Unaudited)   HTML    118K 
44: R3          Condensed Consolidated Balance Sheets (Unaudited)   HTML     28K 
                (Parentheticals)                                                 
48: R4          Condensed Consolidated Statements of Operations     HTML     93K 
                (Unaudited)                                                      
63: R5          Condensed Consolidated Statements of Comprehensive  HTML     59K 
                Earnings (Unaudited)                                             
37: R6          Condensed Consolidated Statements of Changes in     HTML     69K 
                Shareholders' Equity (Unaudited)                                 
43: R7          Condensed Consolidated Statements of Cash Flows     HTML    137K 
                (Unaudited)                                                      
31: R8          Basis of Financial Statement Presentation           HTML     53K 
24: R9          Earnings Per Share                                  HTML     88K 
64: R10         Restructuring and Other Special Charges             HTML     69K 
50: R11         Goodwill and Intangible Assets                      HTML     95K 
49: R12         Debt                                                HTML     75K 
54: R13         Preferred Stock and Common Shareholders' Equity     HTML     64K 
55: R14         Income Taxes                                        HTML     31K 
53: R15         Commitments and Contingencies                       HTML     76K 
56: R16         Pension and Postretirement Plans                    HTML    110K 
45: R17         Fair Value Measurements                             HTML     63K 
47: R18         Derivative Instruments and Hedging Activities       HTML     41K 
52: R19         Supplemental Cash Flow Information                  HTML     38K 
68: R20         BUSINESS SEGMENT INFORMATION Business Segment       HTML     79K 
                information (Notes)                                              
59: R21         Earnings Per Share (Tables)                         HTML     88K 
39: R22         RESTRUCTURING AND OTHER SPECIAL CHARGES             HTML     69K 
                Restructuring and Other Special Charges Detail                   
                (Tables)                                                         
51: R23         Goodwill and Intangible Assets (Tables)             HTML     85K 
41: R24         Debt (Tables)                                       HTML     55K 
18: R25         Preferred Stock and Common Shareholders' Equity     HTML     55K 
                (Tables)                                                         
60: R26         Pension and Postretirement Plans (Tables)           HTML    102K 
65: R27         Fair Value Measurements (Tables)                    HTML     56K 
27: R28         Supplemental Cash Flow Information (Tables)         HTML     36K 
26: R29         Business Segment Information (Tables)               HTML     68K 
29: R30         Basis of Financial Statement Presentation           HTML     24K 
                (Details)                                                        
30: R31         Earnings Per Share (Reconciliation of Basic         HTML     54K 
                Earnings Per Share to Diluted Earnings Per Share)                
                (Details)                                                        
32: R32         Earnings Per Share (Potential common shares not     HTML     24K 
                included in computation of diluted earnings per                  
                share) (Details)                                                 
17: R33         Restructuring and Other Special Charges (Details)   HTML     62K 
57: R34         Restructuring Reserves (Details)                    HTML     53K 
38: R35         Goodwill and Intangible Assets (Changes in          HTML     39K 
                Carrying Amount of Goodwill) (Details)                           
40: R36         Goodwill and Intangible Assets (Components of       HTML     45K 
                identifiable intangible assets) (Details)                        
21: R37         Goodwill and Intangible Assets (Details)            HTML     60K 
67: R38         Debt (Short-term borrowings and current portion of  HTML     58K 
                long-term debt) (Table) (Details)                                
12: R39         Debt (Long-term debt) (Table) (Details)             HTML    151K 
33: R40         Debt (Senior Notes) (Details)                       HTML     65K 
62: R41         Debt (Convertible Subordinated Notes) (Details)     HTML     34K 
20: R42         Debt (Credit Facilities) (Details)                  HTML     55K 
25: R43         Preferred Stock and Common Shareholders' Equity     HTML     59K 
                (Details)                                                        
28: R44         Preferred Stock and Common Shareholders' Equity     HTML    109K 
                PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY -                
                Accumulated Other Comprehensive Earnings (Details)               
36: R45         Income Taxes (Details)                              HTML     32K 
16: R46         Commitments and Contingencies (Details)             HTML     63K 
23: R47         Pension and Postretirement Plans (Details)          HTML     87K 
14: R48         Pension and Postretirement Plans Defined            HTML     33K 
                Contribution Plans (Details)                                     
61: R49         Fair Value Measurements (Details)                   HTML     45K 
19: R50         Derivative Instruments and Hedging Activities       HTML     43K 
                (Details)                                                        
58: R51         Supplemental Cash Flow Information (Details)        HTML     40K 
22: R52         Business Acquisitions (Details)                     HTML    103K 
34: R53         Business Acquisitions Business Acquisitions in the  HTML    223K 
                Aggregate (Details)                                              
13: R54         BUSINESS SEGMENT INFORMATION Business Segment       HTML     63K 
                Information (Details)                                            
66: XML         IDEA XML File -- Filing Summary                      XML    122K 
15: EXCEL       IDEA Workbook of Financial Reports                  XLSX     84K 
 6: EX-101.INS  XBRL Instance -- lh-20150930                         XML   1.94M 
 8: EX-101.CAL  XBRL Calculations -- lh-20150930_cal                 XML    189K 
 9: EX-101.DEF  XBRL Definitions -- lh-20150930_def                  XML    786K 
10: EX-101.LAB  XBRL Labels -- lh-20150930_lab                       XML   1.72M 
11: EX-101.PRE  XBRL Presentations -- lh-20150930_pre                XML   1.07M 
 7: EX-101.SCH  XBRL Schema -- lh-20150930                           XSD    170K 
42: ZIP         XBRL Zipped Folder -- 0000920148-15-000133-xbrl      Zip    250K 


‘EX-101.SCH’   —   XBRL Schema — lh-20150930


This Exhibit is an XBRL XML File.


                                                                                                                                                                                
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<link:definition> 2101100 - Disclosure - BASIS OF FINANCIAL STATEMENT PRESENTATION </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="BusinessAcquisitionsBusinessAcquisitionsInAggregateDetails" roleURI="http://www.labcorp.com/role/BusinessAcquisitionsBusinessAcquisitionsInAggregateDetails">
<link:definition> 2418402 - Disclosure - BUSINESS ACQUISITIONS Business Acquisitions in the Aggregate (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 2418401 - Disclosure - BUSINESS ACQUISITIONS (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="BusinessSegmentInformationBusinessSegmentInformationDetails" roleURI="http://www.labcorp.com/role/BusinessSegmentInformationBusinessSegmentInformationDetails">
<link:definition> 2419404 - Disclosure - BUSINESS SEGMENT INFORMATION Business Segment Information (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="BusinessSegmentInformationBusinessSegmentInformationNotes" roleURI="http://www.labcorp.com/role/BusinessSegmentInformationBusinessSegmentInformationNotes">
<link:definition> 2119101 - Disclosure - BUSINESS SEGMENT INFORMATION Business Segment information (Notes) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2419403 - Disclosure - BUSINESS SEGMENT INFORMATION (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="BusinessSegmentInformationNotes" roleURI="http://www.labcorp.com/role/BusinessSegmentInformationNotes">
<link:definition> 2119100 - Disclosure - BUSINESS SEGMENT INFORMATION (Notes) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="BusinessSegmentInformationTables" roleURI="http://www.labcorp.com/role/BusinessSegmentInformationTables">
<link:definition> 2319302 - Disclosure - BUSINESS SEGMENT INFORMATION (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="CommitmentsAndContingencies" roleURI="http://www.labcorp.com/role/CommitmentsAndContingencies">
<link:definition> 2112100 - Disclosure - COMMITMENTS AND CONTINGENCIES </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="CommitmentsAndContingenciesDetails" roleURI="http://www.labcorp.com/role/CommitmentsAndContingenciesDetails">
<link:definition> 2412401 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="CondensedConsolidatedBalanceSheetsUnaudited" roleURI="http://www.labcorp.com/role/CondensedConsolidatedBalanceSheetsUnaudited">
<link:definition> 1001000 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="CondensedConsolidatedBalanceSheetsUnauditedParentheticals" roleURI="http://www.labcorp.com/role/CondensedConsolidatedBalanceSheetsUnauditedParentheticals">
<link:definition> 1001501 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parentheticals) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="CondensedConsolidatedStatementsOfCashFlowsUnaudited" roleURI="http://www.labcorp.com/role/CondensedConsolidatedStatementsOfCashFlowsUnaudited">
<link:definition> 1005000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="CondensedConsolidatedStatementsOfChangesInShareholdersEquityUnaudited" roleURI="http://www.labcorp.com/role/CondensedConsolidatedStatementsOfChangesInShareholdersEquityUnaudited">
<link:definition> 1004000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="CondensedConsolidatedStatementsOfComprehensiveEarningsUnaudited" roleURI="http://www.labcorp.com/role/CondensedConsolidatedStatementsOfComprehensiveEarningsUnaudited">
<link:definition> 1003000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE EARNINGS (Unaudited) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
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<link:definition> 1002000 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2109100 - Disclosure - DEBT </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="DebtConvertibleSubordinatedNotesDetails" roleURI="http://www.labcorp.com/role/DebtConvertibleSubordinatedNotesDetails">
<link:definition> 2409405 - Disclosure - DEBT (Convertible Subordinated Notes) (Details) </link:definition>
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<link:definition> 2409406 - Disclosure - DEBT (Credit Facilities) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 2409403 - Disclosure - DEBT (Long-term debt) (Table) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
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<link:definition> 2409404 - Disclosure - DEBT (Senior Notes) (Details) </link:definition>
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<link:definition> 2409402 - Disclosure - DEBT (Short-term borrowings and current portion of long-term debt) (Table) (Details) </link:definition>
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<link:definition> 2309301 - Disclosure - DEBT (Tables) </link:definition>
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<link:definition> 2115100 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES </link:definition>
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<link:definition> 2415402 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details) </link:definition>
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<link:definition> 2315301 - Disclosure - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 0001000 - Document - Document and Entity Information Document </link:definition>
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<link:roleType id="EarningsPerShare" roleURI="http://www.labcorp.com/role/EarningsPerShare">
<link:definition> 2103100 - Disclosure - EARNINGS PER SHARE </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2403403 - Disclosure - EARNINGS PER SHARE (Potential common shares not included in computation of diluted earnings per share) (Details) </link:definition>
<link:usedOn> link:presentationLink </link:usedOn>
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<link:definition> 2403402 - Disclosure - EARNINGS PER SHARE (Reconciliation of Basic Earnings Per Share to Diluted Earnings Per Share) (Details) </link:definition>
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<link:definition> 2303301 - Disclosure - EARNINGS PER SHARE (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2114100 - Disclosure - FAIR VALUE MEASUREMENTS </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 2414402 - Disclosure - FAIR VALUE MEASUREMENTS (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 2314301 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2108100 - Disclosure - GOODWILL AND INTANGIBLE ASSETS </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2408402 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Changes in Carrying Amount of Goodwill) (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:roleType id="GoodwillAndIntangibleAssetsComponentsOfIdentifiableIntangibleAssetsDetails" roleURI="http://www.labcorp.com/role/GoodwillAndIntangibleAssetsComponentsOfIdentifiableIntangibleAssetsDetails">
<link:definition> 2408403 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Components of identifiable intangible assets) (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="GoodwillAndIntangibleAssetsDetails" roleURI="http://www.labcorp.com/role/GoodwillAndIntangibleAssetsDetails">
<link:definition> 2408404 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="GoodwillAndIntangibleAssetsTables" roleURI="http://www.labcorp.com/role/GoodwillAndIntangibleAssetsTables">
<link:definition> 2308301 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2111100 - Disclosure - INCOME TAXES </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 2411401 - Disclosure - INCOME TAXES (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2104100 - Disclosure - NONCONTROLLING INTEREST PUTS </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="NoncontrollingInterestPutsDetails" roleURI="http://www.labcorp.com/role/NoncontrollingInterestPutsDetails">
<link:definition> 2404401 - Disclosure - NONCONTROLLING INTEREST PUTS (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 2113100 - Disclosure - PENSION AND POSTRETIREMENT PLANS </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:roleType id="PensionAndPostretirementPlansDefinedContributionPlansDetails" roleURI="http://www.labcorp.com/role/PensionAndPostretirementPlansDefinedContributionPlansDetails">
<link:definition> 2413403 - Disclosure - PENSION AND POSTRETIREMENT PLANS Defined Contribution Plans (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 2413402 - Disclosure - PENSION AND POSTRETIREMENT PLANS (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2313301 - Disclosure - PENSION AND POSTRETIREMENT PLANS (Tables) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2110100 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
<link:usedOn> link:definitionLink </link:usedOn>
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<link:definition> 2410402 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY (Details) </link:definition>
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<link:usedOn> link:calculationLink </link:usedOn>
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<link:definition> 2410403 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY - Accumulated Other Comprehensive Earnings (Details) </link:definition>
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<link:definition> 2310301 - Disclosure - PREFERRED STOCK AND COMMON SHAREHOLDERS' EQUITY (Tables) </link:definition>
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<link:definition> 2105100 - Disclosure - RESTRUCTURING AND OTHER SPECIAL CHARGES </link:definition>
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<link:definition> 2405402 - Disclosure - RESTRUCTURING AND OTHER SPECIAL CHARGES (Details) </link:definition>
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<link:definition> 2305301 - Disclosure - RESTRUCTURING AND OTHER SPECIAL CHARGES Restructuring and Other Special Charges Detail (Tables) </link:definition>
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<link:definition> 2106100 - Disclosure - RESTRUCTURING RESERVES </link:definition>
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<link:definition> 2406401 - Disclosure - RESTRUCTURING RESERVES (Details) </link:definition>
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<link:definition> 2116100 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION </link:definition>
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<link:definition> 2416402 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Details) </link:definition>
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<link:definition> 2316301 - Disclosure - SUPPLEMENTAL CASH FLOW INFORMATION (Tables) </link:definition>
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<xsd:element id="lh_Issuanceofcommonstockunderemployeeplans" name="Issuanceofcommonstockunderemployeeplans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_LabCorpDiagnosticsMember" name="LabCorpDiagnosticsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_LossContingencyDamagesAwardedGross" name="LossContingencyDamagesAwardedGross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_LossContingencyDamagesAwardedNet" name="LossContingencyDamagesAwardedNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_Losscontingencyreduceddamagesawardedgross" name="Losscontingencyreduceddamagesawardedgross" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_Losscontingencyreduceddamagesawardednet" name="Losscontingencyreduceddamagesawardednet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_Makewholepayment" name="Makewholepayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_MinimumPercentageMarketToCalculatedPriceAtWhichContingentCashInterestIsDue" name="MinimumPercentageMarketToCalculatedPriceAtWhichContingentCashInterestIsDue" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_NetDefinedBenefitPlanAmortizationAndDeferral" name="NetDefinedBenefitPlanAmortizationAndDeferral" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_NetRestructuringAndOtherSpecialCharges" name="NetRestructuringAndOtherSpecialCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_NetRestructuringCharges" name="NetRestructuringCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_NonElectiveContribution" name="NonElectiveContribution" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_Noncashconsideration" name="Noncashconsideration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element id="lh_Noncashconversionofzerocouponconvertibledebt" name="Noncashconversionofzerocouponconvertibledebt" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element id="lh_NoncontrollingInterestMezzanineEquity" name="NoncontrollingInterestMezzanineEquity" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="lh_NoncontrollingInterestPutsAbstract" name="NoncontrollingInterestPutsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_NumberOfDaysUsedToEstablishAverageMarketPriceOfZeroCouponSubordinatedNotes" name="NumberOfDaysUsedToEstablishAverageMarketPriceOfZeroCouponSubordinatedNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:normalizedStringItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_NumberOfFeaturesConsideredToBeEmbeddedDerivativeInstruments" name="NumberOfFeaturesConsideredToBeEmbeddedDerivativeInstruments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
<xsd:element id="lh_NumberOfRecipients" name="NumberOfRecipients" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
<xsd:element id="lh_OtherSpecialCharges" name="OtherSpecialCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_Otherlongtermdebtacquistionfinancing" name="Otherlongtermdebtacquistionfinancing" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="lh_OutstandingStockRepurchaseAuthorizationAbstract" name="OutstandingStockRepurchaseAuthorizationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_PatentsLicensesAndTechnologyMember" name="PatentsLicensesAndTechnologyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_PaymentreductionbyAssemblyBillNo.1494" name="PaymentreductionbyAssemblyBillNo.1494" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_PaymentreductionbyAssemblyBillNo.97" name="PaymentreductionbyAssemblyBillNo.97" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_PaymentsOnZeroCouponNotes" name="PaymentsOnZeroCouponNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element id="lh_Paymentsonbridgeloan" name="Paymentsonbridgeloan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_PerShareAmountAbstract" name="PerShareAmountAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_Percentoflowestmaximumcaponpayments" name="Percentoflowestmaximumcaponpayments" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_Postcombinationaccelerationofstockcompensationexpense" name="Postcombinationaccelerationofstockcompensationexpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_PreviouslyRecordedLitigationReserveInConnectionWithFalseClaimsActLawsuit" name="PreviouslyRecordedLitigationReserveInConnectionWithFalseClaimsActLawsuit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element id="lh_PrincipalAmountOfZeroCouponSubordinatedNotes" name="PrincipalAmountOfZeroCouponSubordinatedNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element id="lh_Proceedsfrombridgeloan" name="Proceedsfrombridgeloan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_Proceedsfromissuanceofstocktoemployees" name="Proceedsfromissuanceofstocktoemployees" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_ProposedDamagesPerViolation" name="ProposedDamagesPerViolation" nillable="true" substitutionGroup="xbrli:item" type="us-types:perUnitItemType" xbrli:periodType="instant"/>
<xsd:element id="lh_ReductionforPlaintiffNegligence" name="ReductionforPlaintiffNegligence" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_RestrictedStockAwardsAndPerformanceSharesSurrendered" name="RestrictedStockAwardsAndPerformanceSharesSurrendered" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_RestructuringReserveSettledWithCashAndOtherAdjustment" name="RestructuringReserveSettledWithCashAndOtherAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element id="lh_RevolvingCreditFacilitycovenanttermsceiling" name="RevolvingCreditFacilitycovenanttermsceiling" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="lh_ScheduleOfOtherIntangibleAssetsByMajorClassAxis" name="ScheduleOfOtherIntangibleAssetsByMajorClassAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_ScheduleOfOtherIntangibleAssetsByMajorClassDomain" name="ScheduleOfOtherIntangibleAssetsByMajorClassDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_SegmentReconciliationofOperatingIncometoConsolidatedAbstract" name="SegmentReconciliationofOperatingIncometoConsolidatedAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_SeniorNotesDue2015Member" name="SeniorNotesDue2015Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_SeniorNotesDue2016Member" name="SeniorNotesDue2016Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_SeniorNotesDue2017Member" name="SeniorNotesDue2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_SeniorNotesDue2020Member" name="SeniorNotesDue2020Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_SeniorNotesDue2022Member" name="SeniorNotesDue2022Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_SeniorNotesFairValue" name="SeniorNotesFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="lh_Seniornotesdue2018Member" name="Seniornotesdue2018Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_Seniornotesdue2023Member" name="Seniornotesdue2023Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_Seniornotesdue2025Member" name="Seniornotesdue2025Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_Seniornotesdue2025MemberMember" name="Seniornotesdue2025MemberMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_Seniornotesdue2045Member" name="Seniornotesdue2045Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_SharesAbstract" name="SharesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_Sharestobegrantedperacquireeshareoutstandinginproposedacquisition" name="Sharestobegrantedperacquireeshareoutstandinginproposedacquisition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
<xsd:element id="lh_StockConversionRateForZeroCouponSubordinatedNotes" name="StockConversionRateForZeroCouponSubordinatedNotes" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant"/>
<xsd:element abstract="true" id="lh_TargetRatiotoResumeShareRepurchaseMember" name="TargetRatiotoResumeShareRepurchaseMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_TermLoanMember" name="TermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_Totalacquisitionconsiderationcashandnoncash" name="Totalacquisitionconsiderationcashandnoncash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
<xsd:element id="lh_Transactioncosts" name="Transactioncosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_TriStateClinicalLaboratoryServicesLlcMember" name="TriStateClinicalLaboratoryServicesLlcMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_Writeoffofbridgeandotherdeferredfinancingcosts" name="Writeoffofbridgeandotherdeferredfinancingcosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_ZeroCouponConvertibleSubordinatedNotesLineItems" name="ZeroCouponConvertibleSubordinatedNotesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element abstract="true" id="lh_ZeroCouponConvertibleSubordinatedNotesTable" name="ZeroCouponConvertibleSubordinatedNotesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration"/>
<xsd:element id="lh_ZeroCouponNotesFairValue" name="ZeroCouponNotesFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
</xsd:schema>

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