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Drug Test Detection Period

The following chart gives approximate detection periods for each substance by test type. The ranges depend on amount and frequency of use, metabolic rate, body mass, age, overall health, and urine pH.

Note: Heroin metabolizes into morphine in the body, so a heroin user can expect to test positive for morphine even after the 8 hours listed for the metabolism of heroin. See the morphine section of the above table for morphine detection times.

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