Hello and thanks for the question.
Of course the concern is that the elevated D-dimer may reflect active blood clotting in your body.
I would suggest that in addition to the CT which was already done that your doctors check an ultrasound
of your lower extremities to make sure there is no DVT.
There are other things which may elevate the D-dimer including inflammation. If you have any underlying inflammatory disorder such as rheumatoid arthritis
or chronic kidney disease
If your doctor decides to stop the warfarin
you should be followed closely for recurrence of the thrombosis
Thanks again for sending the query. Pleae let us know if you have any additional concerns.