I bought some a while back from earlypregnancytests.com and I had one give me a NASTY false positive. It was dark pink! Not at all like an evap and it came up right away...I took a few more from the same pee and those were all neg. Needless to say, it was enough to make me crazy! I had a quantitative blood test done tho and it was def neg. They were the ones that had no case and were supposed to be sensitive to 10 miu. I have read very mixed things about them, so I'd just say if you get a positive take a few more and then confirm with a FRER. and if you're getting negs don't assume you're out. I don't think they're as sensitive as they say.