Rapid Exams

A cut-off value is the level of test results, where they are called positive for a particular drug. There may be a drug level present below the cut-off, but for legal purposes such levels are to be disregarded and the sample is called negative. ... 500 Amphetamine / Methamphetamine 500 5,000 1.000 1,000 Barbiturates 300 3,000 None 200 ... ................
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