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Lab test

Fibrinogen Degradation Products (FDP) Test

The Fibrinogen Degradation Products (FDP) test measures the level of fibrinogen degradation products in a frozen plasma sample. Quest describes it as a screening aid used in evaluating disseminated intravascular coagulation (DIC) and acute occlusive vascular disease.

Quest patient service center

About this test

Fibrinogen degradation products form when the clotting protein fibrinogen is broken down. This test measures their level in plasma collected in a citrate (light blue-top) tube, frozen, and analyzed using a latex agglutination method.

People who come to this test are usually already being evaluated for a clotting-related concern their clinician has identified, such as suspected DIC or an occlusive vascular event. Because Quest frames it specifically as a screening aid for those situations, the result is read together with the rest of that clinical picture rather than as a stand-alone answer.

Test details

CollectionQuest patient service center

Quest resources

Additional details

What this test looks at

The single value this test reports is the concentration of fibrinogen degradation products in plasma. Quest positions it specifically as a screening aid for two conditions — disseminated intravascular coagulation and acute occlusive vascular disease — rather than as a general clotting marker, so the result is most meaningful in that specific clinical context.

This test isn't part of the Celio Health store at the moment, so it can't be ordered or requested here. The test menu lists everything that can.

Laboratory results should always be interpreted by a licensed clinician who knows your health history. This page is information about a test, not medical advice.

Frequently asked questions

What does the FDP test measure?

It measures the level of fibrinogen degradation products in plasma, using a latex agglutination method on a frozen, platelet-poor plasma sample.

How is the sample collected?

The test uses plasma collected in a citrate (light blue-top) tube, which is frozen before analysis.

Do I need to prepare for this test?

No preparation instructions are listed for this test, though people follow any instructions their ordering clinician provides.

Why might this test be ordered?

Quest lists it as a screening aid used in evaluating disseminated intravascular coagulation (DIC) and acute occlusive vascular disease.

Last updated 2026-09-18 · How we write about lab testing

Educational content

This page is for general educational purposes only. It is not medical advice, and it is not a substitute for consultation with a qualified healthcare professional. Laboratory results should always be interpreted by a licensed clinician who knows your health history. Laboratory tests of this kind are used for screening and monitoring, not for diagnosis on their own — a diagnosis can only be made by a licensed clinician who evaluates results in the context of your health history and examination. If you have questions about your health or your results, talk with your doctor. If you think you may be experiencing a medical emergency, call 911.