How long would it take to pass an oral mouth swab drug test?

Question

My friend needs to take an oral mouth swab drug test and pass from smoking marijuana.They havent smoke in a little over 2weeks.Could they pass?We read that the test checks for up to 3 days prior to the test.

Answer 1

A lot depends on how much did he smoke before that. A light

smoker compared to a daily one has less chance of retaining THC in the system so he could be safe. A heavy smoker will take at least 30 days. But a hair strand test is suppose to trace back as far as 6 mths. And I can't say I've heard of a oral swab test for drugs. Only DNA testing . They are upgrading I guess. I just read about the saliva test. And I read 3 days for something. The urine test dates even earlier. If a heavier user