[Yolo2012]

So I smoked weed for the first time 18 days ago. I took about 8 hits and didn't get high at all. I don't know why I did it but it was stupid because it had no effect on me but my friends told me that you don't always get high the first time. Anyway, I have a drug test tomorrow And was wondering if I had any chance on passing it /: ? 8 hits, no effect so how long will it stay in my system? Thanks guys.

[smoothy]

Nope... even for booze you would fail tomorrow. If it was next week you might stand a chance. Assuming it really was Pot. 8 hits you certainly should have felt.

Edit: Oops... I missread... somehow I thought it said yesterday.

[DrBill100]

So I smoked weed for the first time 18 days ago. I took about 8 hits and didn't get high at all. I don't know why I did it but it was stupid because it had no effect on me but my friends told me that you don't always get high the first time. ANYWAYS, I have a drug test tomorrow And was wondering if I had any chance on passing it /: ? 8 hits, no effect so how long will it stay in my system? Thanks guys.

You smoked this 18 days previously... and that was your first time trying marijuana?

If that is the case then you should be clean at that time interval. First time and infrequent users eliminate cannabinoid metabolites far faster than regular users.* There is no tolerance and you absorbed less of the product than an experienced smoker and you have no systemic accumulation.

Based on the amount smoked even if some residual THC metabolites remained, not likely, there is little chance of detection due to cutoff of 50 ng for initial screen.

Ref.
Kelly, P. and Jones, R.T. Metabolism of tetrahydrocannabinol in frequent and infrequent marijuana users. J Anal Toxicol 16:228-235, 1992