Medically reviewed by Chika Anekwe, MD A potassium blood test is used to measure the amount of potassium in your blood. It is ...

There are many hundreds of them, and each one is subject not only to observation but also to interpretation ... their blood drawn early the next morning might have out-of-range ­results.

After taking a sample of blood, experts at laboratories that meet certain standards will test it for certain tumor markers. Your doctor’s interpretation of your results depends on the tumor ...

"These findings are largely consistent with [results from the primary analysis of PREVENT CLOT] and provide further evidence of the viability of aspirin to prevent blood clots in orthopedic trauma ...