Pregmate pregnancy tests detect human pregnancy hormone in urine. The accuracy of home pregnancy test results vary from woman to woman. Each woman ovulates at a different time in her menstrual cycle. The average implantation time is 9 days past ovulation. It takes 2 or 3 days after implantation for the embryo to make enough hormone for a home pregnancy test to work. That means the majority of women will not get a positive result until 11 days past ovulation. If you want to test as early as possible, but want to make sure you are getting the most accurate reading, test the day your next period is supposed to begin - you will have a 99percent chance of getting an accurate result. Color: One Color.