Medical research shapes healthcare every day, but not all studies are created equal. Knowing the differences can help you feel more confident reading health information online and understanding what ...

A complete blood count (CBC) is a common test to diagnose anemia by measuring red blood cell count, hemoglobin, and hematocrit levels. Iron deficiency is a common cause of anemia, and doctors may ...

A water deprivation test checks how the body responds to several hours without water intake. A doctor may request this test to help diagnose conditions such as arginine vasopressin disorder (AVD).

A new blood test was found to detect colon cancer with more than 80% accuracy — and to rule it out for 90% of healthy people. The results were presented at the 2025 American Society of Clinical ...