The Fibrinogen, Citrullinated (FGA, FGB, FGG, Fibrinogen A alpha Polypeptide Chain, Fibrinogen alpha Chain, Fibrinogen beta Chain, Fibrinogen gamma Chain, MGC104327, MGC119422, MGC119423, MGC119425, MGC120405)[Fibrinogen, Citrullinated] is a α- or alpha protein sometimes glycoprotein present in blood.