Fasting for blood work means you don't eat or drink anything but water for 8-12 hours before you have a blood test. You also need to avoid chewing gum, smoking, exercising, and taking certain ...

SALT LAKE CITY — 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 ...

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 ...

Pregnancy blood tests can take anywhere from a few hours to a day to receive the results. Blood Test for Cancer. A healthcare provider can use certain blood tests to detect cancer.