DefinitionAn LH urine test detects a rise in lutenizing hormone (LH). Such a rise, or surge, signals the ovary to release the egg. This at-home test is often used by women to help predict ovulation.Alternative NamesLuteinizing hormone urine test (home test); Ovulation prediction test; Urinary LH immunoassays; At-home ovulation prediction testHow the test is performedOvulation prediction test kits usually come with five to seven sticks. You may need to test for several days to detect a surge in LH. The specific time of month that you start testing depends on the length of your menstrual cycle. For example, if your normal menstrual cycle is 28 days, you'll need to test on day 11 -- that is, the 11th day after you started your period.You will need to urinate on the test stick, or place the st