The length of time any drug (illicit or prescribed) stays in your system will vary. In large part, it depends
on your physiological makeup (e.g., your physical height, weight, your amount of body fat, your age, current
state of health, whether or not you exercise mildly-aggressively-or at all). Whether or not you are undergoing
any degree of stress (i.e., your "state of mind") at the time you ingest drugs can play a part as
Still other considerations include your "frequency" of use (1x per day? 3-5x per day?), the
"quantity" of drug you used each time, and the "length of time" (days? weeks? months?) of
your consistent drug-use prior to your drug test. Even the quality ("potency") of the drug you
ingest determines "how long" the drug is detectable in your system when your urine is analyzed
(tested) at the lab.
However, for most people, detectable levels (i.e., shows up as a "positive" in a laboratory drug
test) cannot be predicted.
Let us know if you need any other information.