I have a pre-employment drug test on Monday. By then it will have been just over 2 weeks since I last smoked. I am almost 100% certain that the test will be at LabCorp. If I sub I will be using Quick Fix from a local head shop here in Houston. Each method (substitution and dilution) has their pros and cons and I've been trying to make a decision. I smoked for 3 months about 5 days a week prior to abstaining (roughly 1/8th every 2 - 3 weeks). I am 6'3" 190lbs. I've read all the stickies on this forum as well as a few other sites, so I consider myself moderately informed on both methods. Bottom line, I don't know if I should use my own urine, or put my faith (and a 50K salary) into Quick Fix.

After this post I am going to Walgreens to buy an at home drug test to see where I stand. Any advice is well appreciated! Thanks.
tyler86 Reviewed by tyler86 on . The decision on whether to dilute or substitute is overwhelming I have a pre-employment drug test on Monday. By then it will have been just over 2 weeks since I last smoked. I am almost 100% certain that the test will be at LabCorp. If I sub I will be using Quick Fix from a local head shop here in Houston. Each method (substitution and dilution) has their pros and cons and I've been trying to make a decision. I smoked for 3 months about 5 days a week prior to abstaining (roughly 1/8th every 2 - 3 weeks). I am 6'3" 190lbs. I've read all the stickies Rating: 5