People who are trying to conceive may wonder if a blood pregnancy test can be wrong. These tests, which are done at a health care provider's office or in a lab, are over 99% accurate. Blood tests ...

A new blood test has potential to identify a hard-to-predict but sometimes deadly pregnancy complication weeks before it would normally be found, leading to early treatment and possibly prevention.

In the 1980s, researchers established that certain blood tests in the second trimester could predict the risk of Down syndrome in the fetus and thus enable many women to avoid having amniocentesis.

Taking a pregnancy test too early can produce a false negative result. And the prospect of a major life change like pregnancy is a time when you want to make sure you're getting the most accurate ...

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