BACK TOTOP Browse A-ZSearchBrowse A-ZABCDEFGHIJKLMNOPQRSTUVWXYZ0-9 E-mail FormEmail ResultsName:Email address:Recipients Name:Recipients address:Message: Print-FriendlyBookmarksbookmarks-menuFibrinogen blood testSerum fibrinogen; Plasma fibrinogen; Factor I; Hypofibrinogenemia testFibrinogen is a protein produced by the liver. This protein helps stop bleeding by helping blood clots to form. A blood test can be done to tell how much fibrinogen you have in the blood. How the Test is Performed A sample of blood is needed.Sample of bloodVenipuncture is the collection of blood from a vein. It is most often done for laboratory testing.Read Article Now Book Mark Article How to Prepare for the Test No special preparation is needed. 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 Your doctor may order this test if you have problems with blood clotting, such as excessive bleeding. Normal Results The normal range is 200 to 400 mg/dL (2.0 to 4.0 g/L).Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or may test different specimens. Talk to your doctor about the meaning of your specific test results. What Abnormal Results Mean Abnormal results may be due to:The body using up too much fibrinogen, such as in disseminated intravascular coagulation (DIC) Disseminated intravascular coagulationDisseminated intravascular coagulation (DIC) is a serious disorder in which the proteins that control blood clotting become overactive.Read Article Now Book Mark Article Fibrinogen deficiency (from birth, or acquired after birth) Breakdown of fibrin (fibrinolysis) FibrinolysisFibrinolysis is a normal body process. It prevents blood clots that occur naturally from growing and causing problems. Primary fibrinolysis refers t...Read Article Now Book Mark Article Too much bleeding (hemorrhage) The test may also be performed during pregnancy if the placenta separates from its attachment to the uterus wall (placenta abruption).Placenta abruptionThe placenta is the organ that supplies food and oxygen to the baby during pregnancy. Placental abruption occurs when the placenta detaches from the...Read Article Now Book Mark Article 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 associated 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)This test is most often performed on people who have bleeding disorders. The risk for excessive bleeding is slightly greater in such people than it is for those who do not have bleeding problems.Open ReferencesReferencesChernecky CC, Berger BJ. Fibrinogen (factor I) - plasma. In: Chernecky CC, Berger BJ, eds. Laboratory Tests and Diagnostic Procedures. 6th ed. St Louis, MO: Elsevier Saunders; 2013:525.Pai M. Laboratory evaluation of hemostatic and thrombotic disorders. In: Hoffman R, Benz EJ, Silberstein LE, et al, eds. Hematology: Basic Principles and Practice. 7th ed. Philadelphia, PA: Elsevier; 2018:chap 129.AllVideoImagesTog Tests for Fibrinogen blood test Fibrinogen blood testFibrin degradation products blood testESRRelated Information Fibrinolysis - primary or secondary(Condition)Hemophilia A(Condition)Hemophilia B(Condition)Placenta abruption - definition(Condition) Review Date: 1/19/2021 Reviewed By: Todd Gersten, MD, Hematology/Oncology, Florida Cancer Specialists & Research Institute, Wellington, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team. The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- © 1997- All rights reserved. A.D.A.M. content is best viewed in IE9 or above, Firefox and Google Chrome browser.Content is best viewed in IE9 or above, Firefox and Google Chrome browser.