I took 2 blue dye tests one at 8 dpo which had a line that was hard to see and another 2 days late which had a very clear line on it! I have tested with a red dye which there was nothing to be seen and refuse now to test to my period is actually late! Can you show me your evaps/false positives on blue dyes?:) I've taken blue dyes before and never got a line until after the 10 minute mark and I'm not getting my hopes up