LH peak occurs how many hours before ovulation -
Events Hours Oestraiol rise 83 Onset of LH surge 34-36 Oestraiol peak 24-36 LH peak 12-24 Progesterone rise 8 Approximate time interval of events in menstrual cycle prior to ovulation
36-48hrs.
12-24hrs
48-72hrs
72-96hrs
Sex Hormones