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A member asked:

First of all, i am not a regular marijuana smoker. i took a drug screen on the 9th of febuary which came back clean. i took another one on the 11th which came back positive almost two weeks later when the results came back. i am getting this sample retest

A doctor has provided 1 answer

Drug test: Marijuana is usually detectable in drug tests from 3 days up to 10 days. heavy users can produce positive tests for up to 10 months after stopping. The length of time varies greatly according to quantity, and frequency of use and your body metabolism

Dr Benjamin agreed

Answered 3/3/2015

3.2k views

Thank

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If i used someones clean urine and i spat in the sample will the spit alter the urine sample and make it test positive? Im a daily marijuana smoker.

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