Which statement describes a Confirmatory Laboratory in the drug testing program?

Which statement describes a Confirmatory Laboratory in the drug testing program?

• A. A laboratory capable of performing screening tests.
• B. A laboratory capable of performing qualitative and quantitative examinations of dangerous drugs from the specimen.
• C. A laboratory that analyzes only environmental contaminants.
• D. A laboratory that performs only immunoassay screening.

Answer: (B)

In a drug-testing program, the confirmatory laboratory is the one that performs definitive identification and measurement of drugs in a specimen. It goes beyond a screening test by not only saying whether a drug might be present, but also confirming exactly which drug is present and how much of it is there. This is done using qualitative and quantitative examinations with precise, instrument-based methods (such as GC-MS or LC-MS/MS) that verify identity and determine concentration, meeting regulatory standards for accuracy and defensibility. The other descriptions describe screening capabilities or non-drug analyses, not the definitive, dual-purpose testing of a confirmatory lab.

In a drug-testing program, the confirmatory laboratory is the one that performs definitive identification and measurement of drugs in a specimen. It goes beyond a screening test by not only saying whether a drug might be present, but also confirming exactly which drug is present and how much of it is there. This is done using qualitative and quantitative examinations with precise, instrument-based methods (such as GC-MS or LC-MS/MS) that verify identity and determine concentration, meeting regulatory standards for accuracy and defensibility.

The other descriptions describe screening capabilities or non-drug analyses, not the definitive, dual-purpose testing of a confirmatory lab.