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What are the cutoff levels for drugs, and why do they exist?

April 26, 2017cutoff drugs exist levels

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What are the cutoff levels for drugs, and why do they exist?

1 Answer

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10 Posted

A. Federally established cut-off levels reduce the changes of a false positive due to secondhand inhalation or ingestion of a drug-related substance (such as poppy seeds). If an individual tests positive on an initial drug screening, a confirmation test is often ordered that has much lower cut-off thresholds.