BASIS OF FINANCIAL STATEMENT PRESENTATION

3 Months Ended

Mar. 31, 2013

Accounting Policies [Abstract]

Basis of Financial Statement Presentation

BASIS OF FINANCIAL STATEMENT PRESENTATION

The consolidated financial statements include the accounts of Laboratory Corporation of America Holdings (the “Company”) and its majority-owned subsidiaries for which it exercises control. Long-term investments in affiliated companies in which the Company exercises significant influence, but which it does not control, are accounted for using the equity method. Investments in which the Company does not exercise significant influence (generally, when the Company has an investment of less than 20.0% and no representation on the investee’s board of directors) are accounted for using the cost method. All significant inter-company transactions and accounts have been eliminated. The Company does not have any variable interest entities or special purpose entities whose financial results are not included in the condensed consolidated financial statements.

The financial statements of the Company’s foreign subsidiaries are measured using the local currency as the functional currency. Assets and liabilities are translated at exchange rates as of the balance sheet date. Revenues and expenses are translated at average monthly exchange rates prevailing during the period. Resulting translation adjustments are included in “Accumulated other comprehensive income.”

The accompanying condensed consolidated financial statements of the Company are unaudited. In the opinion of management, all adjustments necessary for a fair statement of results of operations, cash flows and financial position have been made. Except as otherwise disclosed, all such adjustments are of a normal recurring nature. Interim results are not necessarily indicative of results for a full year. The year-end condensed consolidated balance sheet data was derived from audited financial statements but does not include all disclosures required by generally accepted accounting principles.

The financial statements and notes are presented in accordance with the rules and regulations of the Securities and Exchange Commission and do not contain certain information included in the Company’s 2012 Annual Report on Form 10-K. Therefore, the interim statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report.

New Accounting Pronouncements:

In February 2013, the FASB issued an amendment to existing guidance regarding the reporting of amounts reclassified out of accumulated other comprehensive income. The amendment requires an entity to present information about reclassification adjustments from accumulated other comprehensive income in its annual financial statements in a single note or on the face of the financial statements. The amendment is effective prospectively for reporting periods beginning after December 15, 2012. See Footnote 8 for presentation of reclassification adjustments from accumulated other comprehensive income.