A member asked:

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.

A doctor has provided 1 answer

Spit in urine: Yes saliva in daily marijuana user will usually test positive.

Answered 11/25/2013

4.7k views

Thank

Related Questions

A member asked:

How long will marijuana show positive in a urine test?

2 doctors weighed in across 2 answers