These are the ones I get:
Amazon.com: Wondfo Pregnancy Test Strips, 50-count: Health & Personal Care
I used up all of em before my m/c lol I love being able to get so many for 10$ because the poas addict in me is very happy

I got a few evaps out of the bunch, all colorless and after time limit (I believe they were after time limit, if not I know they were colorless) I think this happened 2 out of 50 which is more than I can say for other brands @@.
This test picked up my last pregnancy 2 or 3 days before the first response even showed a faint line!

LOVE them! Just ordered another pack!