My boyfriend has to pass a drug test tomorrow, but he smoked weed once last Wednesday and once the week before that. Except for that he has been clean for about five months prior. What are the chances he will pass without any help?

There is little to no chance that he will pass.

He is using drugs, why should he pass. If he "has" to pass a drug test he needed not to use drugs.

I doubt he will pass but all he can do is try.

He is using drugs, why should he pass. If he "has" to pass a drug test he needed not to use drugs.

I doubt he will pass but all he can do is try.
That was very unhelpful. Thank you

It may have been unhelpful to you, but it was the truth. If he knew he was to avoid drugs and or alcohol, he should have done so.

Does anyone have a more practical answer based on some facts not just opinion?

Yes, I am a registered nurse. If he passes, he will pass by the skin of his teeth. However, since pot is stored in adipose tissue it takes longer to be eliminated from the system. Drinking excess amounts of fluids won't help, but will make the test diluted which is a positive as far as the court is concerned. The rapid detox products will only make your wallet thinner and can be detected on some tests.