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Also known as: Factor I; Fibrinogen Activity; Functional Fibrinogen; Fibrinogen Antigen; Plasma Fibrinogen; Hypofibrinogenemia Test
Formal name: Fibrinogen Activity and Fibrinogen Antigen Assays

At a Glance

Why Get Tested?

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

When to Get Tested?

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

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?