Well, I purchased some test from ebay and failed the first couple(still have quite a few left). I really am in disbelief after passing the phamatech ones from Walgreens, although with a faint line. I have been clean for 31 days today and still am getting no line on the ebay test. The Walgreens test say 99.9 percent accurate while the ebay ones claim 95. Guess it will come soon, just didnt expect to miss on shots 3 and 4 after passing 1 and 2.