Fibrinogen is a protein produced by the liver. This protein helps stop bleeding by helping blood clots to form.
Testing should be done if you have a blood clot, excessive bleeding (e.g. nosebleeds, bleeding gums), or both, and if your prothrombin time (PT) and/or partial thromboplastin time (PTT) is prolonged. If you have a relative with a hereditary fibrinogen abnormality or deficiency, testing should be done as a precaution.
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