ya with the fertility test it measures ur FHS levels and no line or a faint line is neg (which is good) and if the line is the same color or if the test result is dark then the control then its pos (which is not good)
Hello,
I don't know about Fertility test because I have never taken one. BUT if they are just like Ovulation Predictor tests, Then I know something.
The test line has to be as dark or darker then the control line to be positive.
What Cycle Day are you on?