Medically reviewed by Steffini Stalos, DO A vitamin B12 blood test is a reliable way to determine if you have adequate levels ...

After 2 hours, your blood sugar levels are tested again. Urine tests aren’t always used to diagnose diabetes. But doctors often use them if they think you may have type 1 diabetes. The body ...

One of the easiest and most effective ways to determine your blood type is to have your doctor perform a test. A professional will draw blood and then perform two tests on the blood sample ...

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