![]() The licensed physician will also contact the individual directly to obtain any additional information around the positive result, after which, the specialist will declare the outcome. In that case, a licensed doctor specializing in substance abuse will review the results to ensure the chain of custody was adhered to, the specimen was stored correctly, and the correct chemicals were used for testing. Suppose the initial and confirmation screenings both come back with a positive result. Still, false positives are less likely than false negatives-provided strict collection, handling, and analysis procedures are followed. No type of drug testing is 100% reliable. ![]() SAMHSA guidelines set cut-off levels relatively high to account for passive exposure and random false positives. Only if both tests return the same result can a positive outcome be recorded.Ī positive result is determined by a minimum baseline presence of a drug, known as the cut-off level.
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