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Homocysteine is an amino acid. Amino acids are the building blocks of proteins. When proteins break down, elevated levels of amino acids like homocysteine may be found in the bloodstream. Having elevated levels of homocysteine in the blood (hyperhomocysteinemia) is associated with atherosclerosis and blood clots. It is not possible to get homocysteine from the diet. It must be made from methionine, another amino acid that is found in meat, fish, and dairy products.
Fibrinogen is an acute phase. reactant and remains normal or increased in patients with liver disease. Low levels are. only seen in very severe liver disease. Dysfibrinogenemia, which is abnormal. fibrinogen, is also present. The fibrinogen does not polymerize into a tight clot. because extra molecules of sialic acid are bound to the fibrinogen 2. The later. interferes with the formation of a mechanically stable clot.