Your Concerns, Answered Just How long following a constructive ovulation test does one ovulate? It’s not an exact science, however, you can assume to ovulate about 12–24 hrs following a constructive ovulation test. There are actually six times within the month that happen to be deemed your most fertile times. https://microsidd.com/products/lh-ovulation-test-kit?variant=45390241890624¤cy=INR&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic