Drug testing (one time use in a long long time).?

Firstly, wikipedia is not a reliable source, nor is Yahoo answers; secondly, being an honor roll student does not make you intelligent. Nevertheless, whether the drug remains in your system is dependent upon the route of administration, your metabolism, and upon how much THC actually entered your system. Because the half-life depends upon the potency and the amount, it is very difficult to calculate for how long it will remain in your system. If I were you, I would avoid taking the test at all costs necessary. If this is impossible, drink a shitload of vinegar.