Quote Originally Posted by billywebb1983
i just RETESTED with a different brand and came out negative again...WTF. am i superman or something? how comparable are these home tests to the lab?

thanks,
bill
As a scientist I can tell you that these tests are pretty damn accurate. They will use something similar in the lab. Any good test will come with precision and reproducibility paper work on how many test strips were tested and will have the overall results. The test I have now was accurate 99% of the time at 25% above the cutoff (50 ng/mL) and had one false negative at the cutoff level of 50 ng/mL. Do the math, you have nothing to worry about if you can pass one of these colorimetric assays.

That was out of 400 tests.
smokez4u2 Reviewed by smokez4u2 on . What? Passed? ive been a daily smoker for several years. ive had a few short breaks but nothing major...i stopped smoking since last week (7 days ago)...this morning i tested myself with a 'first check' thc indicator...and i came up as negative!!! what!?!?! im pretty short and slim. is it possible i passed? this has to be wrong, right? i thought it would take several weeks to get out. thanks! bill Rating: 5