This story is sponsored by Intermountain LiveWell. 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 you're feeling perfectly ...

This article was reviewed by Felix Gussone, MD. In this guide, we’ll break down what most biomarker lab tests measure, how to prepare for them, and what to do once you receive your results. Not ...

Lab test results can feel overwhelming, but understanding reference ranges helps put them in context. These ranges are based on healthy populations and can vary with age, gender, and testing methods.

‘Spy Lab’ summer camp uses black lights to show how materials glow, reveal hidden messages Ultraviolet light can make invisible ink appear and cause everyday materials to glow — a closer look at ...

Learn about the many tests and examinations your blood sample undergoes in a lab. Giving a blood sample during a doctor’s visit is a common procedure. Discover the dizzying array of automated tests ...

Inside one transparent plastic container on a rack of shelves is someone’s big toe. Inside another, someone else’s uterus. In the complex and bureaucratic health care system, this bright room and its ...

Labcorp is a global life sciences company headquartered in Burlington, North Carolina. Labcorp provides at-home test kits as well as in-person testing at their laboratory facilities, which are located ...

From chronic disease management to everyday wellness, lab testing is evolving fast. New guidelines, AI tools, and at-home options are making results more precise, personal, and accessible.

What Is the CD4:CD8 Ratio Test Used For? CD4 and CD8 are two types of white blood cells in your blood. White blood cells help your body fight infections. If you have HIV infection, your doctor may use ...