How to use ovulation test paper to detect ovulation period

Ovulation test paper is currently on the market, you can easily buy, many brands of ovulation test paper can, their principle is basically the same, is to take this test paper to test our urine there is a LH, is luteinizing hormone. Its concentration increases as we approach ovulation, we take the test paper to measure out if it is high in concentration, then the color of this test paper will be dark, so take the test paper every day, you will see the color darker, you test a cycle of 30 days, you will find that there are very obvious changes, from light to dark, then from deep to light a process, then the deepest day, the next 24 hours, almost is your ovulation day. So you go through this method, after detecting this ovulation day, arrange to go to the same room on the day of the darkest color, because our sperm can survive for about 48 to 72 hours in the reproductive tract, so after ovulation, they can meet to fertilize. This is to find the ovulation day through ovulation test paper, be sure to test every day, put it together after the test, and see the color changes.