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A member asked:

Hi! i have symptoms of pulmonary embolism, but d-dimer test is normal. is it possible to have pulmonary embolism with normal d-dimer?

A doctor has provided 1 answer

D-dimer: Yes a d-dimer can miss a PE if the clot is small or if the test is done too soon or if the test is done incorrectly. The diagnosis is a combination of history, exam, labs, and radiology studies as well as clinical judgement.

Answered 3/2/2017

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Is a D-DIMER FEU blood test better test than D-DIMER DDU blood test for exclusion of DVT and/or pulmonary embolism? If no why?

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