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If it didn't come up in the proper test time, it is more than likely an evap. Thats why they tell you not to wait longer than recommended to check it. Also, blue dye tests are notorious for giving false positives. Its probably just negative, but don't let that dash your hopes. It depends where you are in your cycle, and its also best to use FMU so its got a good supply of hormones for the test to pick up. Your best bet would be to pick up another test, and do it first thing tomorrow morning. Good luck!

It's definitely an evap. Anything after the time line is considered negative. Especially those blue dyes!! Try a pink dye or a digital and make sure you do not read it after the time limit!!

http://www.peeonastick.com/hptfaq.html#12

I'm 9 dpo. I've used the same test multiple times and it's never happened even days late. I'll try a pink dye or digi just to make sure. Thanks!