Quote Originally Posted by TheAtomicPunk
When she goes to take the real test, it's best to piss in the morning since that is the dirtiest.
It is the dirtiest that is why you DON'T want to give the first void of the day for the real test. When testing yourself yes but not for the test.

Also, getntested, passing doesn't mean you are clean. Passing most tests means you are below 50 ng/ml of THC metabolites on immunoassay. It could be zero but passing means below 50. That is the most common cutoff, the one also used by your test kit.