Community post

How quickly do evap lines appear? Do all pregnancy tests develop evap lines?

I started testing 6 DPO cause I wanted to do a progressively darker line (if I were to end up pregnant). I wanted to start with a blank test all white, but I immediately saw a very (VERY) faint line appear. I've been testing with FMU and afternoon and now have a total of 7 different Wondfo dip strips. Only one, from an afternoon, currently remains blank, with no shadow, indent or evap line. It leads me to believe that I've either got a true BFP coming or the test that has no shadow is a fluke.

Poll:
ALL negative tests get evap lines eventually (0 votes)
Evap lines are random on negative tests sometimes appearing sometimes not (7 votes)
Evap lines happen but they are rare (1 votes)

2 Answers • 7 years ago

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