I reassured him and sent him to get another blood specimen drawn without a tourniquet. Why? Because I suspected that the ...

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 ...

For most healthy women, optimal fasting insulin levels should be less than 25 mIU/L (milli-international units per liter), ...

Steffini Stalos, DO, FCAP, is a pathology and lab medicine physician. She is also the chief medical officer of the lab consultancy firm Blood Associates, LLC. Mean corpuscular hemoglobin concentration ...

Hemoglobin is a protein in red blood cells. It carries oxygen around your body, delivering it to tissues. Hemoglobin also carries carbon dioxide to the lungs so you can breathe it out. Iron is a part ...

Doctors often say labs look “normal.” Dr. Mark Hyman explains why that doesn’t always reflect wellness, and what early ...

The numbers and reference ranges on lab results can be confusing to contextualize on your own. Your healthcare provider can ...

If you’ve ever wondered why your doctor asks you to do a blood test or provide a urine sample at your annual checkup even if ...

Dr. Miller: How worried do you need to be when you receive your lab results in the mail or online before your physician's had a chance to talk to you about them? I'm Dr. Tom Miller and we're going to ...

What Is a Cortisol Test? A cortisol test measures the level of cortisol in your blood, urine or saliva. Cortisol is a hormone that's important throughout the body for maintaining blood pressure, blood ...