PrivateFAQPregnancyWhat is lh surge?
A pregnant woman holding her hands around her belly

What is lh surge?

The lh Surge is a term used to describe the rise in the hormone called luteinizing hormone (lh). Once the luteinizing hormone rises, the ovulation is triggered after a period of 36 to 40 hours. After the egg is released the lh surge lasts about 24 hours.

Read more about how ovulation works here.