What is this test?
D-dimer tests are used to help rule out the presence of an inappropriate blood clot (thrombus).
 
Sample required
Blood.
 
Patient preparation
No specific patient preparation protocol is required. Inform the doctor if you are on any medications, have any allergies or underlying medical conditions before this test
 
Turn-around time (How long does it take?)
5 Hours.
 
Basis of the Test
D-dimer is one of the protein fragments produced when a blood clot gets dissolved in the body. It is normally undetectable or detectable at a very low level unless the body is forming and breaking down blood clots, then its level in the blood can significantly rise. While clots most commonly form in the veins of the legs, they may also form in other areas as well. Measurements of D-dimer can be used to help detect clots in any of these sites. For example, clots in coronary arteries are the cause of myocardial infarction (heart attacks).