Are Home Pregnancy Tests Accurate? - Ask Cleveland Clinic's Expert
Over 99% accurate from the day you expect your period. >99% accurate at detecting typical pregnancy hormone levels. Note that hormone levels vary. See insert. These tests look for the hormone hCG, or Human Chorionic Gonadotropin, in a woman’s urine. Some find them reliable, while others end up going to see the doctor anyway. Here are some of the advantages and disadvantages of taking a home pregnancy test. Advantages: Found easily in stores or online; Have a 97% accuracy rate if done correctly.
Measuring hCG is one of the primary ways to test for pregnancy. In blood, the hormone can be detected as early as one week after fertilization. In urine, it can be detected around days after ovulation. How does an hCG pregnancy test work and when is it used? There are a number of different ways that you can test for the presence of hCG.