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Drugs show up in urine longer than in blood. When ingested, the drugs are metabolized and to complete the circuit through the liver and kidneys and then excreted. The process of elimination is longer than the time to circulate the blood.

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9y ago
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15y ago

Some leaves the blood stream via the lungs, the rest via sweat and urine.

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Q: Do drugs show up longer in blood or urine?
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