How Long After an LH Surge Do You Ovulate?
LH, or luteinizing hormone, signals to the ovaries that it is time to release an egg by surging to approximately four times its normal levels directly preceding ovulation. Ovulation predictor kits are generally used by couples hoping to become pregnant to test for an LH surge in the woman, thus pinpointing when ovulation will occur to better time intercourse. While how long after an LH surge ovulation occurs can vary from woman to woman and from cycle to cycle, generally ovulation occurs 12 to 48 hours after a detected LH surge, according to an Ovulation Detection fact sheet from the American Society for Reproductive Medicine.
