6 doctors weighed in:
Why would I have repeated high d-dimer tests but have doctors unable to find any signs of clots?
6 doctors weighed in

Dr. Bac Nguyen
Family Medicine
5 doctors agree
In brief: Positive not useful
A negative d-dimer test is very useful--because it practically tells you no clot.
A positive test is not very useful because quite a few conditions cause positive d-dimer test: liver disease, high rheumatoid factor, inflammation, malignancy, trauma, pregnancy, recent surgery as well as advanced age can cause high d-dimer test.. Consult your doc for more info. Good luck.

In brief: Positive not useful
A negative d-dimer test is very useful--because it practically tells you no clot.
A positive test is not very useful because quite a few conditions cause positive d-dimer test: liver disease, high rheumatoid factor, inflammation, malignancy, trauma, pregnancy, recent surgery as well as advanced age can cause high d-dimer test.. Consult your doc for more info. Good luck.
Dr. Bac Nguyen
Dr. Bac Nguyen
Thank
Dr. Ted King
Phlebology
In brief: High D-dimers
The d-dimer is an acute phase reactant.
That means that anything that causes inflammation will cause the d-dimer level to be elevated, as dr. Nguyen so nicely spelled out. Since elevated d-dimer levels are so no-specific, they are often times essentially meaningless in giving specific information.

In brief: High D-dimers
The d-dimer is an acute phase reactant.
That means that anything that causes inflammation will cause the d-dimer level to be elevated, as dr. Nguyen so nicely spelled out. Since elevated d-dimer levels are so no-specific, they are often times essentially meaningless in giving specific information.
Dr. Ted King
Dr. Ted King
Thank
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