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Fibrinogen

Also known as: Factor I; Fibrinogen Activity; Functional Fibrinogen; Fibrinogen Antigen
Formal name: Fibrinogen Activity and Fibrinogen Antigen Assays
Related tests: Prothrombin Time (PT); Partial Thromboplastin Time (PTT); D-dimer; Coagulation Factors; Thrombin Time

Why should I do it?
As part of an investigation of a possible bleeding disorder or thrombotic episode, particularly to evaluate the level and function of fibrinogen; sometimes it is used to help evaluate your risk of developing cardiovascular disease

When should I do it?
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 doctor wants additional information to help evaluate your risk of developing heart disease

What Kind of Sample is Needed?
A blood sample drawn from a vein in your arm or sometimes via fingerstick

Test Preparation Needed?