First Response One Step Ovulation Predictor Test Kit

Predicts the 2 days when you are most likely to become pregnant. First Response 1-Step Ovulation Predictor Test is an easy way to help you find the 2 days when you are most able to become pregnant. It quickly and accurately detects the increase in luteinizing hormone in your urine (LH Surge), which normally occurs 24-36 hours before ovulation. Your two most fertile days begin with the LH surge. You are most likely to become pregnant if you have intercourse within 24-36 hours after you detect your LH surge. First Response One-Step Ovulation Predictor Test Easy to Use - One easy step. Simply hold the stick in your urine stream. No cup. No mess. Easy to Read - One purple line tells you the test is working. The appearance of a second line that is similar or darker in color than the first line means that you should ovulate within 24-36 hours.