Varibility of tests

[gunit6745]

A friend of mine smoked for 3-4 months heavily (avg 2 times a day) up until about 15 days ago when he subsequently smoked once every 2-3 days until about 5 days ago. He now needs to pass a drug test in about 2 weeks. Is he screwed?

He was thinking of purchasing some at home tests, but said individual test results can vary from test to test. My question is how much variability is there from test to test? If he is negative on at home test will he pass the real one?

Thanks in advance...

gunit6745 Reviewed by gunit6745 on 01-02-2008. Varibility of tests A friend of mine smoked for 3-4 months heavily (avg 2 times a day) up until about 15 days ago when he subsequently smoked once every 2-3 days until about 5 days ago. He now needs to pass a drug test in about 2 weeks. Is he screwed? He was thinking of purchasing some at home tests, but said individual test results can vary from test to test. My question is how much variability is there from test to test? If he is negative on at home test will he pass the real one? Thanks in advance... Rating: 5

[Ibar69]

I'm new here but:

It is very hard to tell if someone will pass a test without taking weight/metabolism/etc into account. People on this forum will tell you everyone varies and to do a search for "half life."

I would say he will not pass. Tell him to take a home test. From what I understand, all home tests have the 50 ng/ml cutoff, same as the test at the clinic. If that turns out positive (I think) they send it off to another test that is 15 ng/ml.

Read the stickys: "The truth about drug tests", "Subbing" and "Watering." He might be able to pass that way.

Again, I'm new here so hopefully someone else will chime in.

[killerweed420]

The strip tests are very accurate. I would say he should pickup a few cheap ones to test himself. Subbing is always the safest bet but there are some people that are able to piss clean pretty quickly. You never know till you test yourself.