The D-dimer test is a blood test that checks for, or monitors, blood-clotting problems. Find out what a positive result means for you.
Deep vein thrombosis
Deep vein thrombosis (DVT) is a blood clot that occurs in a deep vein. Find out about DVT symptoms and treatment, and how to prevent it.
Thrombosis with thrombocytopenia syndrome (TTS)
Learn about thrombosis with thrombocytopenia, a rare blood-clotting syndrome linked to the AstraZeneca COVID-19 vaccine, including symptoms and treatment.