Your doctor says everything looks fine, but you still feel terrible. The problem might not be your health but how labs define “normal.” Understanding the difference between normal and optimal could ...

Run-of-the mill? Middle of the road? Typical? The chance that you are correct is vanishingly small. If you're a clinician, like me, you get a LOT of medical questions. While we've all been asked to ...

"Normal" lab results may not reflect optimal health or individual needs. Reference ranges often represent averages from a not-very-healthy population. Tracking trends and seeking optimal levels is key ...

Understanding your lab results is key to managing your health. Learn what common tests mean and how to talk to your doctor.

If you’ve ever had a doctor order a blood test for you, chances are that they ran a complete blood count, or CBC. One of the most common blood tests in the world, CBC tests are run billions of times ...