Fibrinogen
- H2032
Rs 880
- Why Get Tested?
Factor I Fibrinogen Activity Functional Fibrinogen Fibrinogen Antigen Plasma Fibrinogen Hypofibrinogenemia Test - When To Get Tested?
Fibrinogen Activity and Fibrinogen Antigen Assays - Sample Type:Sodium Citrate (Blue)
- Fasting :AS PER DOCTOR
- Report Delivery:within 48 Hrs of Test Schdule
- Components:1 Observations
Tests Detail
| Observations Included |
| Fibrinogen |
| The Test marked with (*) are in our NABL Scope. |
Sample Report
- Also Known As:
Fibrinogen - Formal Name:
Fibrinogen - Sample Instructions:
As part of an investigation of a possible bleeding disorder or blood clot (thrombotic episode), particularly to evaluate the level and function of fibrinogen; sometimes used to help evaluate your risk of developing cardiovascular disease - Test Preparation Needed?
When you have bleeding or thrombotic episodes; when a PT and/or PTT test is prolonged; when you have a relative with a hereditary fibrinogen deficiency or abnormality; when your health care provider wants additional information to help evaluate your risk of developing heart disease - What Is Being Tested?
None - How Is It Used?
Fibrinogen is a protein, a coagulation factor (factor I) that is essential for blood clot formation. Two types of tests are available to evaluate fibrinogen: a fibrinogen activity test evaluates how well fibrinogen functions in helping to form a blood clot while a fibrinogen antigen test measures the amount of fibrinogen in the blood. Fibrinogen is produced by the liver and released into circulation along with several other coagulation factor proteins. Normally, when a body tissue or blood vessel wall is injured, a process called hemostasis begins to help stop the bleeding by forming a plug at the injury site. Small cell fragments called platelets adhere to and aggregate at the site, a coagulation cascade begins, and clotting factors are activated one after the other. As the cascade nears completion, soluble fibrinogen is converted into insoluble fibrin threads. These threads crosslink together to form a fibrin net that stabilizes at the injury site. The fibrin net adheres to the site of injury along with the platelets to form a stable blood clot. This barrier prevents additional blood loss and remains in place until the injured area has healed. For a stable clot to form there must be enough normally functioning platelets and coagulation factors. If there are dysfunctional factors or platelets, or too little or too much of them, it can lead to bleeding episodes and/or to formation of an in appropriate blood clot (thrombosis). Several laboratory tests, including fibrinogen tests, can be used to evaluate hemostasis. It is now understood that coagulation tests are based on what happens artificially in the test setting (in vitro) and thus do not necessarily reflect what actually happens in the body (in vivo). Nevertheless, the tests can be used to evaluate specific components of the hemostasis system. The fibrinogen activity test evaluates that part of the hemostatic process in which soluble fibrinogen is converted into fibrin threads. With the addition of thrombin - When Is It Ordered
This testing is used to evaluate fibrinogen, a protein that is essential for blood clot formation. When there is an injury and bleeding occurs, the body forms a blood clot through a series of steps. In one of the last steps, soluble fibrinogen is converted into insoluble fibrin threads that crosslink together to form a net that stabilizes and adheres at the injury site until the area has healed. Two types of tests are available: A fibrinogen activity test measures the function of fibrinogen and its ability to be converted into fibrin. It is used: As part of an investigation of a possible bleeding disorder or inappropriate blood clot formation (thrombotic episode) As a follow-up to an abnormal bleeding disorder test (prothrombin time, PT or partial thromboplastin time, PTT) and/or an episode of prolonged or unexplained bleeding Along with tests such as PT, PTT, platelet function tests, fibrin degradation products (FDP), and D-dimer to help diagnose disseminated intravascular coagulation (DIC) or abnormal fibrinolysis Occasionally to help monitor the status of a progressive disease (such as liver disease) over time or, rarely, to monitor treatment of an acquired condition (such as DIC) Sometimes along with other cardiac risk markers such as C-reactive protein (CRP) to help determine a person's overall risk of developing cardiovascular disease. This use of the test has not gained widespread acceptance though because there are no direct treatments for elevated levels. However, many health practitioners feel that fibrinogen activity measurements give them additional information that may lead them to be more aggressive in treating those risk factors that they can treat (such as unhealthy levels of cholesterol). A fibrinogen antigen test is occasionally ordered as a follow-up test to determine whether decreased fibrinogen activity is due to insufficient fibrinogen or dysfunctional fibrinogen (caused by inherited or acquired - What Does The Test Result Mean?
A health practitioner may order a fibrinogen activity test when someone: Has unexplained or prolonged bleeding Has a thrombosis Has an abnormal PT and PTT test result Has symptoms of or is undergoing treatment for DIC or abnormal fibrinolysis May have an inherited or acquired coagulation factor (clotting protein) deficiency or dysfunction Has an acquired bleeding disorder and the person's health practitioner wants to evaluate and monitor their clotting ability (over time) A fibrinogen antigen test may be performed when someone has a low result on a fibrinogen activity test to help determine whether it is due to insufficient or dysfunctional fibrinogen. High fibrinogen levels have also been associated with coronary heart disease, myocardial infarction, and peripheral arterial disease. In some cases, fibrinogen activity testing is performed along with other tests when a health practitioner wants to evaluate an individual's risk of developing cardiovascular disease. - Is There Anything Else I Should Known?
Fibrinogen test results are reported as the concentration of the protein in the blood. Fibrinogen activity tests are converted into concentrations for comparison with fibrinogen antigen results. Normal fibrinogen activity results usually reflect normal blood clotting ability. Significantly decreased fibrinogen activity may be due to decreased or dysfunctional fibrinogen. Reduced fibrinogen activity and antigen levels may impair the body's ability to form a stable blood clot. Chronically low levels may be related to decreased production due to an inherited condition such as afibrinogenemia or hypofibrinogenemia or to an acquired condition such as end-stage liver disease or severe malnutrition. Acutely low levels are often related to consumption of fibrinogen such as may be seen with disseminated intravascular coagulation (DIC) and abnormal fibrinolysis, which occurs when the body is overactive in clearing blood clots. Reduced fibrinogen levels may also occur following rapid, large-volume blood transfusions and in people who are malnourished. Sometimes a health practitioner will use a ratio of the antigen test and the activity test. This is to help to distinguish dysfibrinogenemia (high ratio) from hypofibrinogenemia (ratio close to 1). Fibrinogen is an acute phase reactant, meaning that fibrinogen concentrations may rise sharply in any condition that causes inflammation or tissue damage. Elevated concentrations of fibrinogen are not specific; that is, they do not tell the health practitioner the cause or location of the disturbance. Usually these elevations in the fibrinogen level are temporary, returning to normal after the underlying condition has been resolved. Elevated levels may be seen with: Acute infections Cancer Coronary heart disease, myocardial infarction Stroke Inflammatory disorders (like rheumatoid arthritis and glomerulonephritis, a form of kidney disease) Trauma Cigarette smoking Pregnancy Peripheral artery d
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