Famed biohacker Bryan Johnson and his Blueprint team devised this measure of harmful plastic particles in your blood.

Diurnal cortisol tests measure your cortisol levels at various points, from the time you wake up until the time you go to bed. They can help a healthcare professional visualize your adrenal gland ...

Doctors can diagnose fatty liver disease, now called metabolic dysfunction-associated steatotic liver disease (MASLD), using blood tests that measure serum liver enzyme levels. Elevated enzyme levels ...

Dr. Omar Al-Heeti is an assistant professor of medicine at Southern Illinois University and practices internal medicine with a specialty in infectious diseases. He received his medical degree from the ...

A study finds that a blood test that evaluates levels of three compounds — lipoprotein(a), C-reactive protein (a marker of inflammation), and “bad” LDL cholesterol — can accurately reveal heart ...

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

Measuring blood glucose levels is critical for maintaining optimal health and identifying sudden changes. Test strips are a ...

Biological age tests measure how fast your body is aging compared to your actual age. These tests rely on biomarkers tied to ...

Though my cortisol test results stressed me out, I'm glad I know more about how cortisol affects my health. Anna Gragert (she/her/hers) was previously the lifestyle editor at HelloGiggles, deputy ...

At-home hormone tests can help identify a hormonal imbalance. Everlywell is our best women’s hormone test kit selection, but we also cover the best thyroid hormone test, male hormone test, and more.