If you're expecting multiples, it's possible to get a false negative pregnancy test result. Here's the reason behind this rare phenomenon. Medically reviewed by Alyssa Dweck, MS, MD, FACOG A home ...

Pregnancy tests with blue or pink dye typically show one line if the result is negative and ... It can cause a false positive result or a faint line on a pregnancy test because the brief pregnancy ...

False negative results most often occur when people test in the first few weeks after infection, during the ‘window period’. After this, they are extremely rare. In most settings, the probability of a ...