As a person with a chronic illness, I'm no stranger to bloodwork. I used to pore over my lab results, googling the various meanings, and trying not to panic when a test fell out of range. Function ...

When I signed up to try a bunch of health and aging tests for The Post, I knew there would be blood. I just didn’t realize ...

VO2 max is an intimidating word for an easy-to-understand biometric: It’s how well your body uses oxygen when you push ...

Vitamin D tests involve taking a blood sample to measure the vitamin D levels in your bloodstream. There are two forms of vitamin D in the blood: 25-hydroxy vitamin D, or calcidiol, and 1,25-dihydroxy ...

In September 2015, Dr. Dena Marrinucci set out to perfect a tabletop device that could rapidly test a small amount of blood, returning results for more than 30 routine tests in under 30 minutes. If ...

When I was a kid, my home lab consisted of test tubes and beakers, sodium bicarbonate (baking soda), acetic acid (vinegar), and the occasional boom, followed closely by the sound of my mom in the ...

We tested the best vitamin deficiency tests from LetsGetChecked, Everlywell, and LabCorp, and our testers found them easy to use and informative. Learn more about the best vitamin deficiency tests ...