Is a False Positive Possible?
I am using the Advanced Digital OPK Monitor and a Ferning Microscope. I got a negative ferning, but a positive OPK at Peak, without having a High before it. When I pulled the OPK I noticed there was the control line, but the other line wasn't there. Under the control line and where the second line should be, there was a light blue streak. Is that a false positive, or how should I take that?