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A 34-year-old female asked:

My clear blue opk shows estrogen peak on day 11-12 & lh surge day 13-14 of cycle.no blood test done for hormone levels. can opk be trusted for that?

1 doctor answer1 doctor weighed in
Dr. Howard Shapiro
Specializes in Internal Medicine - Nephrology & Dialysis
It can be trusted: Unless you are taking Clomid, (clomiphene) the tests, when used according to directions, are 99% accurate.
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Last updated Oct 9, 2014

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