Start testing a few days before the expected ovulation date. For a 28-day cycle, this would be around day 11. Collect urine samples at the same time each day, preferably in the afternoon. Follow the instructions on the kit to dip the test strip or apply urine to the digital reader. Wait for the recommended time to read the results. A positive result indicates an LH surge, suggesting that ovulation will occur within the next 24 to 36 hours.
