U.S. doctors online nowAsk doctors free
A 33-year-old member asked:

when does the lh surge drop?

2 doctor answers5 doctors weighed in
Dr. Seth Derman
Fertility Medicine 33 years experience
Short: The LH surge is very short. The LH stays elevated in your bloodstream only for a number of hours but then may spill into the urine for a day or two. If the LH surge on an ovulation prediction kit continues for many days, it is possible your LH levels may be chronically elevated rather than the kit indicating a surge.
Dr. Thomas Knecht
A Verified Doctor answered
A US doctor answered Learn more
Right after...: ...it peaks. See diagram

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Talk to a doctor
24/7 visits
$15 per month

Similar questions

A 32-year-old member asked:

Can you have two LH surges?

2 doctor answers3 doctors weighed in
Dr. Jeffrey Keenan
Fertility Medicine 38 years experience
Yes: The LH surge is different in different women. Some women have a very short surge that only lasts one day. Others have a longer surge that lasts 2 or 3 days. However, a third group has a bimodal surge that peaks, drops a day or so, and then peaks again. Therefore you can have 2 positives on your LH surge testing. However, the important one is the first positive, time IUI with that one.
A 39-year-old member asked:

Is there any posibility for the pupila to be rebuilt if this it was damaged after an cataracta surge?

5 doctor answers9 doctors weighed in
Dr. Robert Kwok
Pediatrics 33 years experience
May be hard to do: The colored part of the eye that makes the pupil is called the iris. The iris is thin and soft, so repairing it may be hard to do. Sometimes, repairs are done for people with traumatic eyeball injuries or people born with part of the iris missing. One can get some opinions from eye surgeons who do such repairs, to get an idea about whether or not one's problem is fixable.
A 35-year-old female asked:

Positive LH surge yesterday I got and today negative what that means?

1 doctor answer2 doctors weighed in
Dr. Ruth Crystal
Obstetrics and Gynecology 27 years experience
You ovulated: It means that you ovulated. The lh surges and has a spike of hormone. Usually, you ovulate about 24 hours after the positive lh surge.
Southlake, TX
A 29-year-old female asked:

Is testing once every 24 hours with an OPK sufficient or is it possible to still miss my surge?

1 doctor answer2 doctors weighed in
Dr. Khurram Rehman
Fertility Medicine 26 years experience
No test is perfect: Ovulation predictor kits are good but no test is 100% accurate. Regular periods mean you're ovulating regularly - test daily between 10 am and noon starting day 10 counting the start of your period as day 1, don't use first morning urine. One test a day is enough. Ovuquick brand is a little more sensitive (search it). If you have irregular cycles, or the OPK is not working for you see a rei doc.
A 31-year-old member asked:

Does cramping happen after LH surge?

1 doctor answer1 doctor weighed in
Dr. Bryan Treacy
Gynecology 35 years experience
Yes: The lh surge occurs during the mid portion of the menstrual cycle & signals the ovary to release a mature follicle (egg) for possible fertilization. Some women cramp with ovulation, a phenomenon known as mittelschmertz. Ovulation typically occurs 24-36 hours after the lh surge, around day 16-18 of the menstrual cycle.

Related questions

A 48-year-old member asked:
2 doctor answers2 doctors weighed in
A member asked:
5 doctor answers7 doctors weighed in
A 35-year-old member asked:
1 doctor answer2 doctors weighed in

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

Ask doctors free
Personalized answers
Talk to a doctor
24/7 visits
$15 per month
Last updated Feb 27, 2019
Connect with a U.S. board-certified doctor by text or video anytime, anywhere.
24/7 visits
$15 per month


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.