What is LH?
Luteinizing Hormone (LH) is a hormone produced by your pituitary gland. Your body always makes a small amount of LH, but just before you ovulate, you make much more LH. This test can detect this LH surge, which usually happens 1-1½ days before you ovulate. What is E3G? E3G is produced when estrogen breaks down in your body. It accumulates in your urine around the time of ovulation and causes your cervical mucus to become thin and slippery. Sperm may swim more easily in your thin and slippery cervical mucus, increasing your chances of getting pregnant. What type of test is this? This is a qualitative test — you find out whether or not you have elevated LH or E3G levels, not if you will definitely become pregnant. Why should you do this test? You should do this test if you want to know when you expect to ovulate and be in the most fertile part of your menstrual cycle. This test can be used to help you plan to become pregnant. You should not use this test to help prevent pregnancy, becau