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

Your blood contains a wealth of information about the state of your health. Analyzing the levels of each component is an ...

As a rule, younger people need less vitamin D than older people, regardless of sex. This article explains average vitamin D ...

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

Scientists at Rutgers Health have discovered that a simple blood test could diagnose asthma and determine its severity, a ...

After 3 hours, a normal reading would be less than 140 mg/dL. This test has a similar procedure to the previous one. Your blood sugar is measured 2 hours after drinking the glucose solution.

clinicians determine what are called reference intervals by measuring a blood test in a range of healthy people. They usually take the middle 95% of these healthy values and call that “normal ...