It cannot be detected in any drug screening. :) There is no test that can detect it.
they can't, they can only be detected if you get a spinal tap.
Depends on the drug and the type of test.
As long as you have the hair you had when you did the speed.
2 years....
two weeks it depens
3 days
Viagra is not tested for in urine/hair drug screens
If you are that worried the don't smoke it. Or get out of my military, idiot.
72 hours
Depends on whether you mean how long is it effective, or how long until it can't be detected by a drug screen.
Just a few hours and you should sober up and no longer feel the effects.