Which of the following statements is/are TRUE ABOUT D-Dimer Test? [Select All That Apply]
 
a. A D-dimer test looks for trimethyl occulin in blood.
 
b. D-dimer is a protein fragment that's made when a blood clot dissolves in a body.
 
c. It is used to diagnose deep vein thrombosis.
 
d. The test is also known as fibrin degradation fragment.

Answer: (b, c, d)

A D-dimer test looks for D-dimer in blood. D-dimer is a protein fragment (small piece) that's made when a blood clot dissolves in a body. It is also known as a fragment D-dimer or fibrin degradation fragment test.
 
A D-dimer test is most often used to find out whether you have a blood clotting disorder. These disorders include:
 
1. Deep vein thrombosis (DVT), a blood clot that's deep inside a vein. These clots usually affect the lower legs, but they can also happen in other parts of the body.
 
2. Pulmonary embolism (PE), a blockage in an artery in the lungs. It usually happens when a blood clot in another part of the body breaks loose and travels to the lungs. DVT clots are a common cause of PE.
 
3. Disseminated intravascular coagulation (DIC), a condition that causes too many blood clots to form. They can form throughout the body, causing organ damage and other serious complications. DIC may be caused by traumatic injuries or certain types of infections or cancer.
 
4. Stroke, a blockage in the blood supply to the brain.