Incorrect negative test??

[lauraxoxo]

Has any one had a incorrect negative clear blue test..
I tested negative 2 days overdue and am now 4 days late and still no period but cramps.

Anyone experienced a negative test before a positive?

Majority of false negatives would be- later ovulation, urine not concentrated enough or on the VERY rare case- the tests are dud. Also, how sensitive are the tests? First response and other FRER can detect it down to 10mlU/ml, whereas other brands can only detect 25mlU/ml.

I had a batch of one step cheapies which were indeed duds a ew years ago, but not clear blue.

Test again tomorrow with first urine of the day with a different brand. Best of luck x

@SM4713 thank you!! I think this one is 25 sensitivity- clear blue digital I tried x