Should we all be concerned about our cortisol levels? I took a blood stress test and spoke with experts to find out.

The primary purpose of the test is to check whether a person has abnormally high or low iron levels in their blood, both of which can cause serious health complications. The results of a serum ...

If you don't know your blood type, you're not alone. However it is important medical information to know, and here's how you can find it.

A vitamin B12 blood test is one way to know if you’re B12 deficient. Some people opt for a urine test instead. Learn when levels are low, normal, or high.

A new way of interpreting standard blood tests could help doctors spot cancer warning signs ... this variation is currently ...