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Doctor insights on: Can You Ovulate Before Lh Surge

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What is the probability that after getting a positive home ovulation test/lh surge that someone not ovulate?

What is the probability that after getting a positive home ovulation test/lh surge that someone not ovulate?

Good question: There is some variability in9 the accuracy of the available otc ovulation prediction kits. If it's working, then the ovulation should occur for the overwhelming majority (>95%) of patients who experience the lh surge. You can have your doctor order a day 21 Progesterone level, and that will confirm ovulation (or prove it didn't occur), to help you be sure. ...Read more

Dr. Philip Chenette
1,737 doctors shared insights

Ovulation (Definition)

Ovulation is the act of the ovary releasing the egg after it has been hormonally prepared, to be ...Read more


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When your LH surge drops is that because you have now ovulated or does it drop again after your surge before ovulation occurs?

When your LH surge drops is that because you have now ovulated or does it drop again after your surge before ovulation occurs?

Yes: No one who knows exactly how long lh surge last. It definitely lasts at least 36 hours. In most women. .We know from in vitro fertilization ovulation occurs somewhere between 36 to 48 hours after the lh surge. It is best to have relations with your partner the day of your lh surge and the next day. We know that it is best if sperm are there before ovulation. ...Read more

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Does an OPK shows a positive LH surge even during ovulation? If not, how much time before ovulation LH drops.

Does an OPK shows a positive LH surge even during ovulation? If not, how much time before ovulation LH drops.

Ovulation: The OPK should be positive just before ovulation. If it's still positive with your period, it could be that you're producing the hormone LH in high amounts, or the kit could be wrong. ...Read more

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Does the LH surge (monitored on opk) drop before, during or after you ovulate? My OPK tested positive yesterday but negative today- have i ovulated?

Does the LH surge (monitored on opk) drop before, during or after you ovulate? My OPK tested positive yesterday but negative today- have i ovulated?

Ovulation today: The lh surge drops before ovulation. Lh surge from start to peak to drop lasts about 24 hours, and you will generally ovulate about 24 hours after the peak lh surge. Thus, you will likely ovulate sometime today. Good luck! ...Read more

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My lh surge was from 10pm cd18 to 11am cd 19. Did i ovulated on cd 19 or cd 20, my bbt chart says cd 20 and i got a temp rise cd 21?

My lh surge was from 10pm cd18 to 11am cd 19. Did i ovulated on cd 19 or cd 20, my bbt chart says cd 20 and i got a temp rise cd 21?

Either one: Based on this information you could have ovulated on either day. It is not usually clinically important to narrow it down to the exact moment of ovulation. Just have sex around that time. A one day discrepancy is not going to make much difference. ...Read more

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Help.Charting my temp for first time. Positive LH surge and dip in temp and then went up by 0.3degrees then next day went down by 0.2 have i ovulated?

Help.Charting my temp for first time. Positive LH surge and dip in temp and then went up by 0.3degrees then next day went down by 0.2 have i ovulated?

May I suggest: If you are getting clear results with the opk that you stop doing the bbt? Bbt are famously difficult to interpret and not terribly precise anyway. As long as you do get a surge on opk, that always trumps bbt. ...Read more

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What's the likelihood of having an LH surge but not ovulating?

What's the likelihood of having an LH surge but not ovulating?

Unknown, but low: The complete answer: it is uncommon to not ovulate after detecting a TRUE LH surge. This was called a luteininzed unruptured follicle (LUF) and we are not certain how often it happens, most estimates are around 10%. Here's the trick though: many women get false LH readings on OPK, so obviously you would NOT expect ovulation to follow these. Good wishes. ...Read more

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I got my LH surge on 24, 25th and got BBT spike on 30th... When did I ovulate then?

Go with OPK, but...: If I have to guess i'd go with the opk, but they are not as reliable as manufacturer would like you to believe - still a better guess than the bbt. The more regular your cycles, the more i trust the opk, the less regular...You get the idea. Specialists monitor patients in teh offcie with ultrasound to sort out this kind of dilemma. ...Read more