What is D-Dimer?
D-Dimer test is used when you have symptoms of a thrombotic episode or a condition that causes acute and/or chronic inappropriate blood clot formation, such as deep vein thrombosis (DVT), pulmonary embolism (PE), or disseminated intravascular coagulation (DIC), and to monitor the progress and treatment of DIC and excessive clotting conditions.
Why is D-Dimer done?
D-dimer test is used to detect the presence of an inappropriate blood clot (thrombus). Some of the conditions that the D-dimer test is used to help rule out include:
-Deep vein thrombosis (DVT)
-Pulmonary embolism (PE)
What does D-Dimer Measure?
D-dimer testing is usually ordered when someone goes to the hospital with symptoms such as chest pain and difficulty in breathing. A D-dimer test may be ordered when someone has symptoms of deep vein thrombosis, such as:
-Leg pain or tenderness, usually in one leg
-Leg swelling, edema
-Discoloration of the leg
This test may also be ordered when someone has symptoms of pulmonary embolism such as:
-Rapid heart rate
-Sudden shortness of breath, forced breathing
-Coughing hemoptysis (blood present in sputum)
-Lung-related chest pain
Interpreting D-Dimer results
A “negative” D-dimer result (D-dimer levels below a predetermined value) means that the person being tested does not have an acute condition or disease-causing abnormal clot formation and breakdown in the body.
A "positive" D-dimer result may indicate that there may be a significant blood clot (thrombus) formation and breakdown in the body by detecting the presence of an abnormally high level of fibrin degradation products.