D-Dimer

MeasuredUseful

A fragment released when a blood clot breaks down.

Used to rule out a suspected clot in someone with symptoms; it is not a screening test.

How we rate it — Useful

Worth doing for a specific reason — a risk factor, a symptom, an age group.

This rating and the description above were written against published screening guidelines by someone who is not a clinician, and are awaiting review by one. We would rather say that than imply an authority we do not have.

Check-ups that include it

None of the health check-up packages we track include this test.

Information here is for comparing packages, not for diagnosing yourself. Talk to a doctor about which tests you actually need.