Laboratory reference ranges reflect methods, populations, and policies, and experienced clinicians interpret them in context rather than applying fixed cutoffs theoretically.

You check your reports. HbA1c is within range. The doctor says blood sugar looks fine. Yet, by mid-morning, energy dips. After lunch, eyes feel heavy. By evening, even small tasks feel draining.So ...

Most people think of iron deficiency as something that shows up clearly in a blood test. But in recent years, researchers and clinicians have begun paying attention to a less noticeable condition that ...

Medically reviewed by Mary Josephine Hessert, DO A1C reflects your average blood sugar over the past two to three months, and ...

For many years, scientists have been puzzled by individuals who live in high-elevation areas throughout the world. Surveys of high-altitude populations, from areas of the Andes to regions of the ...

Research has shown that living at higher altitudes lowers your risk of developing diabetes, but scientists haven't been able ...

Patients with lupus nephritis complicated by thrombotic microangiopathy tend to have high death risk and poor renal outcomes. They need vital and effective therapies.

There are thousands of different lab tests and assessments that doctors can recommend to help you paint a more complete ...

Relative Energy Deficiency - Sport (RED-S) has become a major focus of research in understanding athletic underperformance.

The A1C test measures a person’s average blood sugar over the previous two to three months and does not require fasting, ...

Transcript: Rare Diseases ...

Our Real Talk with a Doc columnist explains how to push back if your doctor's obsessed with weight loss. And what other ...