Hepatic encephalopathy laboratory findings

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

Laboratory Findings

Tests may include:

• Complete blood count or hematocrit to check for anemia
• Liver function tests
• Prothrombin time
• Serum ammonia levels
• Sodium level in the blood
• Potassium level in the blood
• BUN and creatinine to see how the kidneys are working

Ammonia levels

An ammonia level more than 200 strongly suggests hepatic encephalopathy.

Ammonia levels over 123 are likely to improve with lactulose therapy.