which are done at a health care provider's office or in a lab, are over 99% accurate. Blood tests confirm pregnancy by ...

At-home pregnancy tests promise 99 percent accuracy. But the best time to take a pregnancy test and get the most exact result depends on when you conceive.

Researchers discovered a molecular timer that gets activated in the first days of pregnancy and influences when mice give ...

A pregnancy test measures the presence of the hormone human chorionic gonadotropin, or hCG, which is produced by an embryo. Though not as accurate as a pregnancy test at the doctors, an at-home ...