Alright here's the deal, and this is going to be as close to the truth as possible.
If you're not a common pot smoker, you take one hit and even if you inhaled it, you're in the clear. Single use of
marijuana can stay in your system for up to 72 hours and that is the longest it can stay. There are other variables such as your metabolism but as long as you're not horribly overweight I'll think you'll be OK. Furthermore, THC cannot be detected in your urine til 24 hours after use so, in reality, it was more like 6 days but that's still longer than 24-72 hours. Even if you are horribly overweight I'm willing to give you a very high chance that you will pass this drug test. For a typical drug test to be returned it could take anywhere from 1-4 weeks. I would say on average it would be 2 weeks. You'll be fine.
To further help you out I will tell you my story.
I smoked a blunt of high quality marijuana with 2 or 3 other people and was given a drug test 3 days later. Now remember the 24 hour rule, so it was more like 2 days after it was in my system. I passed and it was sent to a lab. Granted I am 140 pounds, have a very low fat percentage, and a high metabolism. Once again, I believe you'll be fine, I can almost say I know you'll be fine.