How accurate are ovulation predictor kits for pcod patients? Took Clomid (clomiphene) 100 on day 3 -7 did ovulation tests on18th day of clycle till 23rd still -ve

OPK. The accuracy varies - sadly, the opk are more reliable the more regular your cycles are normal, meaning the women who need them most will get the least use out of them. When i monitor patients in-office with ultrasound we monitor to about cd 25 before quitting, i suggest you do the same.