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.

I reassured him and sent him to get another blood specimen drawn without a tourniquet. Why? Because I suspected that the tourniquet had been left in place so long that it caused the red blood cells, ...

A vitamin B12 blood test is a reliable way to determine if you have adequate levels of this crucial nutrient. Vitamin B12 is ...

Add Yahoo as a preferred source to see more of our stories on Google. Blood tests are a quick and fairly easy way for medical professionals to detect serious health problems. Having your blood drawn ...

A normal fasting blood sugar level for someone between the ages of 50 and 60 is between 70 and 99 mg/dL. Blood sugar (glucose) targets for older people with diabetes tend to be different than for ...

A study finds that a blood test that evaluates levels of three compounds — lipoprotein(a), C-reactive protein (a marker of inflammation), and “bad” LDL cholesterol — can accurately reveal heart ...

Doctors can diagnose fatty liver disease, now called metabolic dysfunction-associated steatotic liver disease (MASLD), using blood tests that measure serum liver enzyme levels. Elevated enzyme levels ...

When I signed up to try a bunch of health and aging tests for The Post, I knew there would be blood. I just didn’t realize ...