Accessibility

LabCorp and its Specialty Testing Group, a fully integrated portfolio of specialty and esoteric testing laboratories.

Help

The primary focus of LabCorp Corporate Solutions is to provide consistently good service. For customer convenience, the following online forms are designed to direct your inquiries appropriately.

Request LabCorp Corporate Solutions sales assistance
Telephone: 800-343-8974 (voicemail)
For occupational testing set up or for additional information on our services, contact a LabCorp Corporate Solutions sales representative.

Order drug testing supplies
Telephone: 800-833-3984
Allows LabCorp clients to order drug and alcohol testing supplies (LabCorp account number required).

Request customer service
Telephone: 800-833-3984
Allows LabCorp clients to submit request for customer service assistance to LabCorp’s Occupational Testing Services customer operations department.

Web Tools FAQs

  • What may the user view through the LabCorp Corporate Solutions Web Tools chain of custody image viewing feature?

    Authorized users may view a scanned image of the chain of custody form received by the laboratory. Access to laboratory-scanned COC images is restricted by user role and the parameters provided on the user registration form by the authorized company representative. The designated MRO may access laboratory-scanned COC images for regulated specimens through LabCorp Corporate Solutions. The MRO copy of a regulated COC form, which contains restricted donor information, is not available through LabCorp Corporate Solutions. 

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  • What specimen information may be obtained through LabCorp Corporate Solutions Web Tools?

    LabCorp Corporate Solutions Web Tools registered users are given access to data according to the user role and access rights indicated on the user registration form by the authorized company representative. Depending on user access rights, a user may view specimen status descriptions or test result information for reported specimens. Only the designated medical review officer (MRO) is able to access result information for regulated specimens. 

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  • What is Donor Registration?

    The LabCorp Corporate Solutions Web Tools Donor Registration feature enables the user to create a drug screen test order record that may be retrieved by the specimen collector in Web COC. Donor Registration assists employers in assuring that company drug testing deadlines are met, since the user may set a donor registration expiration date. Donor Registration enables the user to elect to receive email notification of each specimen collection completion or donor no-show. 

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Toxicology FAQs

  • Why are screening and confirmation cut-off levels different?

    Simply stated, screening and confirmation testing are performed using different testing methodologies that have different specificity and sensitivity. The immunoassay tests used to perform initial drug screening are designed to detect a wide range of chemically similar compounds that react with the antibodies which are at the core of the chemistry making up the tests. The combined cross-reactivity of compounds in the drug class may elicit a positive response, even though an individual metabolite may be present below the initial test cutoff. When performing confirmation testing by GC/MS or LC/MS/MS, one or more specific metabolites can be identified, quantified and reported using the applicable confirmation cutoff for a positive test result. 

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  • What testing methodology does LabCorp use to perform initial drug screening?

    LabCorp performs initial drug screening using immunoassay. An immunoassay is a test that uses antibodies to detect the presence of drugs and other substances in urine. The initial screening process does not measure the specific amount of drug present in urine samples. It provides either a negative or a presumptive positive result, indicating the absence or possible presence of detectable drug relative to a ‘threshold’ or ‘cutoff’ concentration. 

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  • What methodologies does LabCorp use to perform confirmation testing?

    Gas chromatography/mass spectrometry (GC/MS) and liquid chromatography with tandem mass spectrometry (LC/MS/MS) are the methods LabCorp uses to confirm presumptive positive drug screens. These mass spectrometric methodologies provide identification of the molecule(s) based on characteristic fragmentation patterns at specific retention times. GC/MS and LC/MS/MS are hyphenated techniques, utilizing a gas or liquid chromatograph coupled to single- or multiple-stage mass spectrometers. 

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