Definition of Factor I
1. Noun. A protein present in blood plasma; converts to fibrin when blood clots.
Medical Definition of Factor I
1.
A protein which is synthesised by the liver.
Fibrinogen is converted to fibrin, in the formation of a blood clot, via the enzymatic action of thrombin. A fibrinogen assay measures the concentration of fibrinogen in the blood and may be used to evaluate abnormal blood clotting.
A lack of fibrinogen may be congenital or acquired. A condition known as DIC results in the excessive utilisation and depletion of fibrinogen.
Synonym: fibrinogen.
(15 Nov 1997)
Lexicographical Neighbors of Factor I
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