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 ...

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

When it comes to maintaining health, it can be helpful to understand an optimal baseline for some matters. Learning a healthy weight range for your height, age, and gender, for instance, can be useful ...

Lindsay Modglin is a nurse and professional writer who regularly writes about complex medical topics, as well as travel and the great outdoors. She holds a professional certificate in scientific ...

A blood test is a medical procedure where a sample of a person's blood is taken (called a blood draw) and sent to a lab for analysis. Knowing the results of blood tests helps a physician better ...

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 ...