Drug test – How long is THC detectable in blood and urine?

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Depending on the dosage, the THC of a joint can be detected in the blood for an average of 7 to 12 hours, with a range of up to 27 hours. The metabolic product THC-COOH is detectable for 3-7 days, with regular consumption several weeks. THC-COOH can be detected in urine for 3-5 days for a single consumption and for 4-6 weeks for regular consumption. The literature reports about a permanent consumer who was “clean” again only after 77 days. The detection times therefore vary greatly.

Until a regular cannabis user falls below the traffic-legally significant limit of 1.0 nanograms THC / ml blood, he may need two to 10 days of abstinence.

More detailed information on this question can be found in the following articles:

THC in the blood: How long can THC and its metabolites be detected in the blood?

Urine tests: How long can THC degradation products be detected in urine?

Discovery of cannabis use: Can cannabis ingestion be detected in blood or urine by routine laboratory tests?

Note: All information without guarantee! The degradation of THC and THC-COOH in the human body is not linear, so there are large differences between different people. In individual cases, even after significantly longer abstinence periods, positive evidence of cannabis can still be provided!

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