A mean platelet volume (MPV) test measures the average size of your platelets, which are small blood cells that help with blood clotting. Typical MPV levels range from 7 to 13 femtoliters. High MPV ...

Kaitlin Sullivan is a health and science journalist based in Colorado. She's been part of multiple award-winning investigations into health topics including the international medical device industry ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

What Is Prostate-Specific Antigen? Your prostate is a gland that makes seminal fluid, which nourishes and transports your sperm when you ejaculate. It's about the size of a walnut and surrounds your ...

Also called a modified Allen test, this is a simple way to measure how well blood flows in your hand. Your doctor may need to check your circulation before they operate on your wrist or a spot nearby, ...

The fasting plasma glucose (FPG) test measures blood sugar levels after fasting and is a reliable tool for diagnosing diabetes. The FPG test requires fasting for at least eight hours and is often ...

You may keep testing positive for COVID-19 even after feeling better for weeks or months. PCR tests are more sensitive and can show a positive result long after you're not contagious. Most people are ...

ICC World Test Championship West Indies hope Sri Lanka success sparks new era 8 July, 2026 ICC World Test Championship India set for Sri Lanka Test challenge 2 July, 2026 World Test Championship ...