A member asked:

Can lung infection cause d dimer results to be high?

4 doctors weighed in across 4 answers

Yep: D-dimers are the product of blood clots breaking down somewhere in the body. These are very sensitive tests, but they are not very specific - meaning the values are abnormal in a wide variety of settings. These tests are sometimes used to diagnose blood clots in the legs or lungs, but they can be elevated in a lot of other diseases including infections.

Answered 9/15/2018

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Dr. Raja-elie Abdulnour answered

Specializes in Critical Care

Yes: Most inflammatory problems, which includes pneumonia, can cause a d-dimer ot be high.

Answered 7/27/2018

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Dr. Hesham Hassaballa answered

Specializes in Pulmonary Critical Care

Yes: Anything can cause a d-dimer to be high: infection, cancer, clots, inflammation. If you have a high d-dimer, it can be from anything. It is important to make sure that the doctor who ordered it is following up on the result.

Answered 10/15/2020

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D-dimer: This is a fibrin degradation product, a small protein fragment present in the blood after a blood clot is dissolved by fibrinolysis. It is named because it contains two crosslinked d fragments of the fibrin protein. It can be elevated in any condition in which there is inflammation of the lining of the blood vessels, resulting in clotting and dissolution of the clots. Used to measure risk of pe.

Answered 7/27/2018

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