Which substance is associated with a '15 confirm' value in the document?

Which substance is associated with a '15 confirm' value in the document?

• A. Marijuana
• B. Methamphetamine
• C. Tetrahydrocannabinol
• D. Laboratory report

Answer: (A)

When interpretation of drug tests, the initial screen is followed by a confirmatory test that uses a defined cutoff to verify the presence of a specific substance. For cannabis, the confirmatory cutoff is 15 ng/mL (usually for the THC metabolite measured in urine). This 15 ng/mL confirm value is the standard threshold used to confirm marijuana exposure, making marijuana the substance associated with that value. The other options don’t have this specific confirm cutoff in the same context, and a “laboratory report” isn’t a substance.

When interpretation of drug tests, the initial screen is followed by a confirmatory test that uses a defined cutoff to verify the presence of a specific substance. For cannabis, the confirmatory cutoff is 15 ng/mL (usually for the THC metabolite measured in urine). This 15 ng/mL confirm value is the standard threshold used to confirm marijuana exposure, making marijuana the substance associated with that value. The other options don’t have this specific confirm cutoff in the same context, and a “laboratory report” isn’t a substance.