Fibrin degradation products blood test
FDPs; FSPs; Fibrin split products; Fibrin breakdown productsFibrin degradation products (FDPs) are the substances left behind when clots dissolve in the blood. A blood test can be done to measure these products.
How the Test is Performed
A blood sample is needed.
Blood sample
Venipuncture is the collection of blood from a vein. It is most often done for laboratory testing.
Read Article Now Book Mark ArticleHow to Prepare for the Test
Certain medicines can change blood test results.
- Tell your health care provider about all the medicines you take.
- Your provider will tell you if you need to temporarily stop taking any medicines before you have this test. This includes blood thinners such as aspirin, heparin, streptokinase, and urokinase, which make it hard for the blood to clot.
- Do not stop or change your medicines without talking to your provider first.
How the Test will Feel
When the needle is inserted to draw blood, some people feel moderate pain. Others feel only a prick or stinging. Afterward, there may be some throbbing or slight bruising. This soon goes away.
Why the Test is Performed
This test is done to see if your clot-dissolving (fibrinolytic) system is working properly. Your provider may order this test if you have signs of disseminated intravascular coagulation (DIC) or another clot-dissolving disorder.
Disseminated intravascular coagulation ...
Disseminated intravascular coagulation (DIC) is a serious disorder in which the proteins that control blood clotting become overactive.
Read Article Now Book Mark ArticleNormal Results
The result is normally less than 10 mcg/mL (10 mg/L).
Note: Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or may test different specimens. Talk to your provider about the meaning of your specific test results.
What Abnormal Results Mean
Increased FDPs may be a sign of primary or secondary fibrinolysis (clot-dissolving activity) due to a variety of causes, including:
- Blood clotting problems
-
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Read Article Now Book Mark Article - Disseminated intravascular coagulation (DIC)
- Low level of oxygen in the blood
- Infections
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Leukemia
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Liver disease
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- Recent surgery that involved a heart and lung bypass pump, or surgery to lower high blood pressure in the liver
- Kidney disease
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Transplanted organ rejection
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Transplant rejection is a process in which a transplant recipient's immune system attacks the transplanted organ or tissue.
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Risks
There is little risk involved with having your blood taken. Veins and arteries vary in size from one person to another, and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.
Other risks with having blood drawn are slight, but may include:
- Excessive bleeding
- Fainting or feeling lightheaded
- Multiple punctures to locate veins
- Hematoma (blood accumulating under the skin)
- Infection (a slight risk any time the skin is broken)
References
Levi M. Disseminated intravascular coagulation. In: Hoffman R, Benz EJ, Silberstein LE, et al, eds. Hematology: Basic Principles and Practice. 8th ed. Philadelphia, PA: Elsevier; 2023:chap 137.
Schafer AI. Approach to the patient with bleeding and thrombosis. In: Goldman L, Schafer AI, eds. Goldman-Cecil Medicine. 26th ed. Philadelphia, PA: Elsevier; 2020:chap 162.
Review Date: 2/2/2023
Reviewed By: Mark Levin, MD, Hematologist and Oncologist, Monsey, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.