ummm, i think you have 7 days once the small vial is mixedd into the big one to use it otherwise it could not work. but i opened one and tested it last night then a few drops from it again this morning, like i didnt use the whole thing or even close to 1/3 of it, plus, i bought a second bottle for my actual test so i think ill be good to go. i wanted to test it on 3 different brands of testers, it passed with flying colors on the most high tech one i could get my hands on. (which came from a clinic my friend works at) it really was the most advanced thing i ever seen, not like the cheap little dipstick ones. but the opened QF bottle passed on all 3.

i also have a pill ive yet to try but im gonna load up on as a backup , its aparently 5 times the potency of the "strip" drink.

i would stay away from the drinks, ive heard alot of people say that, and from my own testing here at home i found it to really be a hit or miss scene. and we both know u cant go in there not knowing, cause if ur half as trippin as i have been for the past week u want to know before you go.
mascar22 Reviewed by mascar22 on . not sure which method for a small girl, please help out fast!! Well obviously this UA took me by total surprise, I last smoked (about 3 bowls, REAL high grade) 2 days ago and will probably have to test within a week or so. I'm small but have a BIG doubt that I can take anything to make me test clean. I hadn't smoked for about 2 weeks before that, but I'd rate myself a pretty heavy smoker overall. My pattern was buying some that lasted me about a week, then waited 1-2 weeks before buying again. I'd smoke several times a day for the week I had it. ANYWAY Rating: 5