D-dimer

Sample Type Na Citrate
Pre-test Information Brief clinical history to be provided. Overnight fasting is also recommended.
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₹ Price ₹ 1200
D dimer test is carried out to diagnose the intravascular coagulation and fibrinolysis. A negative test indicates that thrombus is absent. However, a positive result does not predict the clot's presence. It indicates the requirement of further diagnostic procedures. This procedure could be CT angiography or ultrasound.

Frequently Asked Questions (FAQs)

D-dimer reflects the presence of stabilized fibrin and this has made this marker a useful tool in the diagnosis of venous thromboembolism (VTE). This test is indicated for use in conjunction with a clinical pretest probability assessment model to exclude deep vein thrombosis (DVT) and pulmonary embolism (PE) disease in outpatients suspected of DVT or PE. D-dimer is not specific for DVT/PE and elevated levels are also observed in a variety of other conditions where activation of coagulation and fibrinolysis occurs (for example surgery trauma, infection, inflammation, pregnancy, cancer). Under certain conditions, lower than excepted D-dimer results may occur giving rise to false-negatives. Therefore it is not safe to use D-dimer for exclusion of DVT/PE in patients with high pre-test probability, long duration of DVT/PE symptoms (more than one week) or already under anticoagulant treatment.