When will I know if I passed my drug test?

I woke up at 5:30 this morning at took 4 aspirin. I had some dry toast and then drank 3 bottles of water. About 2 hours before my test, I drank a Value detox drink, then, as directed, filled the bottle with water and drank it. I urinated 3 times before my test and drank one more bottle of water. My urine was a light yellow. I took the test and they put my urine into two vials and sealed them up to send them to Medtox labs. I'm 5'2" and weigh about 150 pounds. I hadn't smoked in 2 1/2 weeks and had not been a very heavy user recently. What do you think my odds are and when will I know?