Cirrhosis laboratory findings

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Aditya Govindavarjhulla, M.B.B.S. [2]

Laboratory Findings

The following findings are typical in cirrhosis:

• Aminotransferases - AST and ALT are moderately elevated, with AST > ALT. However, normal aminotransferases do not preclude cirrhosis.
• Alkaline phosphatase - usually slightly elevated.
• GGT -- correlates with AP levels. Typically much higher in chronic liver disease from alcohol.
• Bilirubin - may elevate as cirrhosis progresses.
• Albumin - levels fall as the synthetic function of the liver declines with worsening cirrhosis since albumin is exclusively synthesized in the liver
• Prothrombin time - increases since the liver synthesizes clotting factors.
• Globulins - increased due to shunting of bacterial antigens away from the liver to lymphoid tissue.
• Serum sodium - hyponatremia due to inability to excrete free water resulting from high levels of ADHand aldosterone.
• Thrombocytopenia - due to both congestive splenomegaly as well as decreased thrombopoietin from the liver. However this rarely results in platelet count < 50,000/mL.
• Leukopenia and neutropenia - due to splenomegaly with splenic margination.
• Coagulation defects - the liver produces most of the coagulation factors and thus coagulopathy correlates with worsening liver disease.

Other laboratory studies performed in newly diagnosed cirrhosis may include:

• Serology for hepatitis viruses, autoantibodies (ANA, anti-smooth muscle,anti-mitochondria, anti-LKM)
• Ferritin and transferrin saturation (markers of iron overload), copper and ceruloplasmin (markers of copper overload)
• Immunoglobulin levels (IgG, IgM, IgA) - these are non-specific but may assist in distinguishing various causes
• Cholesterol and glucose
• Alpha 1-antitrypsin
• Prothrombin time, albumin
• Platelets
• Lytes/Creatinine (Cr)- hyponatremia suggests severe disease