D-Dimer Test Explained: When Blood Clot Testing Is Needed and What a High Result Means
A D-Dimer test is a simple blood test that checks for a substance released when a clot in the body breaks down. Doctors often use it to help decide whether further blood clot testing is needed. It does not confirm a clot on its own. What is a D-Dimer test?
August 24, 2026