I've been testing neg on supposedly 10mlu tests for days. I gave up hope and sank an awful lot of wine on Saturday night as a result for this month.
Tested yesterday on a FRER as my boobs were excruciating and would give Jordan a run for her money, and I had insomnia (not like me at all).
Bright, strong line. Just out of interest I checked another EC. Still neg.
Again today, EC still neg, FRER even stronger than yesterday. I've done a couple of dozen of these tests this cycle and they've all been negative.
There is just no way they can be 10 mlu when the frer are showing positive and they are 25.
Just sharing as I know a lot of us use them!