When your doctor thinks you might have an infection or an allergy, a simple blood test should give answers within hours. But ...

Brad Reisfeld is a professor of chemical and biological engineering, biomedical engineering, and public health at Colorado State University. Your blood serves numerous roles to maintain your health.

This article was reviewed by Felix Gussone, MD. How to Read Blood Test Results: What “Normal” Really Means for Your Health ...

That said, several key categories of biomarkers can provide meaningful insight into long-term health.

The FDA recently cleared the Lumipulse blood test for early diagnosis of Alzheimer's disease in people 55 and over with memory loss. The noninvasive Lumipulse blood test measures the levels of two ...

A San Diego medical technology company received FDA approval this morning for a device that could transform how patients get ...

In July, the US Food and Drug Administration (FDA) approved a new blood-based test to screen for colorectal cancer (CRC). The FDA's approval of Shield (Guardant Health) marks a notable achievement, as ...

A new blood test that screens for colorectal cancer has just been approved by the Food and Drug Administration (FDA). The blood sample needed for the new test, called Shield, can be obtained at a ...

Grail's Galleri test screens for more than 50 different types of cancer from a single blood draw. (Getty Images) If you could take a simple blood test that could detect multiple types of cancer while ...

Hemochromatosis is a disorder that causes your body to absorb too much iron. Blood tests that measure iron levels in your blood and liver can help diagnose the condition. The medical disorder ...

A TB blood test can find out whether you have the Mycobacterium tuberculosis bacteria in your body. Whether you need to get tested and how often depends on your specific circumstances. A blood test ...

Aldosterone helps control how much salt is in your body. If your body makes too much of it, your blood pressure can go up.