A member asked:

Used clearblue easy opk. i got a smiley face stating high fertility day. i used a diff clearblue easy opk and got nothing. which was correct?

A doctor has provided 1 answer
Dr. Daniel Rychlik answered

Specializes in Fertility Medicine

Both maybe: Theses tests measure lh levels in the urine. They only detect lh when it reaches a certain level. If you dilute the urine (comes out clear) then the level of lh may be dilute and not picked up by the tests. Also you may be catching the lh level as it is declining.

Answered 1/13/2014

4.6k views

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