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A member asked:

Why would a d dimer test show a false negative result for clotting? to double check i had an ultrasound that did show dvt on posterior of knee, healthy young male with no known reason for clotting.

A doctor has provided 1 answer

May not be false: If there is no active clotting or dissolution of clotting D-dimer will not be elevated.

Answered 8/15/2020

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