what is the test for?...and yes, there is a severe difference between a blood test and a urine test.
if its for a job/ military....its probably urine. dont worry about that, they will test for amphetamines, barbiturates. (coke, weed, pills)
if its blood (which is unlikely) and he was taking prop....just tell him to wait as long as he can to take it, if im not mistaken they will only be able to se that his test levels are elevated. if hes taking test enanthate, it will be in his system longer than a short acting ester.
your turn