What is the normal range for D-dimer test?

A normal D-dimer is considered less than 0.50. A positive D-dimer is 0.50 or greater. Since this is a screening test, a positive D-Dimer is a positive screen.

What is a good D-dimer score?

A normal D-dimer result of 500 ng/mL or less fibrinogen equivalent units (FEU) on the IL D-Dimer HS500 kit has a negative predictive value of approximately 100% (range 97%-100%) and is FDA approved for the exclusion of acute pulmonary embolism (PE) and deep vein thrombosis (DVT) when there is low or moderate pretest …

What is considered extremely elevated D-dimer?

Very high D-dimer level was defined as 100 times above the cutoff point, i.e. equal to or greater than 50 mg/L FEU. We analyzed the results of the 1,053 samples, reviewed the history of the patients with very high D-dimer through the hospital computer system, and found out the causes producing very high D-dimer.

What is abnormal D-dimer?

An elevated D-dimer level is not normal. It’s usually found after a clot has formed and is in the process of breaking down. If you are having significant formation and breakdown of blood clot in your body, your D-dimer may be elevated. A negative D-dimer test means that a blood clot is highly unlikely.

Is elevated D-dimer serious?

Conclusion: Although D-dimer testing has a reputation for being very non-specific, an extremely elevated D-dimer is uniquely associated with severe disease, mainly including VTE, sepsis and/or cancer.

What is a high D-dimer reading?

A positive D-dimer result may indicate the presence of an abnormally high level of fibrin degradation products. It indicates that there may be significant blood clot (thrombus) formation and breakdown in the body, but it does not tell the location or cause.

What does a positive D-dimer mean?

What is a critical D-dimer?

It indicates that there may be significant blood clot (thrombus) formation and breakdown in the body, but it does not tell the location or cause. For example, it may be due to a venous thromboembolism (VTE) or disseminated intravascular coagulation (DIC). Typically, the D-dimer level is very elevated in DIC.

Can inflammation cause a high D-dimer?

Elevated levels of d-dimer are associated with inflammation and disease activity rather than risk of venous thromboembolism in patients with granulomatosis with polyangiitis in long term observation. Adv Med Sci.

What autoimmune diseases cause elevated D-dimer?

Increases in plasma D-dimer levels have been reported in various autoimmune vasculitis conditions, including antineutrophil cytoplasmic antibody-associated vasculitis39, cutaneous polyarteritis nodosa29, Takayasu’s arteritis40, eosinophilic granulomatosis with polyangiitis41 and IgA vasculitis42.

What does the D-dimer test results mean?

If your results show low or normal D-dimer levels in the blood, it means you probably don’t have a clotting disorder. If your results show higher than normal levels of D-dimer, it may mean you have a clotting disorder.

What should I do if my D-dimer level is elevated?

Both increased and normal D-dimer levels may require follow-up and can lead to further diagnostic testing. People with positive D-dimer tests and those with moderate to high risk for DVT require further study with diagnostic imaging (e.g., CT angiography).

When to take a D-dimer blood clot test?

A D-dimer test is one way a doctor can see whether you have a serious blood clot. When you get a cut, your body takes a bunch of steps to make your blood clump up. It’s a normal part of healing — without it, you’d keep bleeding and have a much more serious problem to deal with.

What does it mean to have low D-dimer in blood?

If your results show low or normal D-dimer levels in the blood, it means you probably don’t have a clotting disorder. If your results show higher than normal levels of D-dimer, it may mean you have a clotting disorder. But it cannot show where the clot is located or what type of clotting disorder you have.