I took a urine test on 10/6 for THC. My level was 18ng/ml with the gas test. Cut off is at 15ng/ml. weight is about 160lbs and I am 6'0". Very little body fat. I have another test next week on 10/15. I drink a good amount of water and plan on working out till then. Do you think I'll be o.k. how long will it take to drop that other 3ng?

Depends on how long it takes for your body to metabolise the remainder of the THC in your system and if you smoke up in the mean time. Nine days should be enough to drop below 15. Why are you being tested?

Not smoking any more. It is a pre-employment test. I was offered two jobs. Didn't really want the first job anyway but this second one I really wan't so I want to make sure I pass. I don't really have the money to spend on a cleanse kit but there is a tea shop by me that has a detox tea that I will have a few of those between now and then. I have Irritable Bowel Syndrome so all I drink is water all day and about 2 coffees a day no other types of fluids.

Don't waste your money. Just keep doing what you're doing. You should pass with no problems.