Some reasons for false-negative results on home pregnancy tests include taking the test too early, low-sensitivity test strips, diluted urine and being overweight, according to BabyMed. A false negative means that the pregnancy test result is negative when a woman is actually pregnant.
Taking a pregnancy test too early is the most common reason for a false-negative result, explains BabyMed. Doctors recommend that women wait until they have missed their period before using pregnancy tests at home. When women have diluted urine because they have consumed a lot of fluids, the levels of human chorionic gonadotropin hormone may be too low to be detected by the test. Overweight women might have false-negative results on pregnancy tests because they often have lower level of the hCG hormone, which the test is unable to detect.