Is antimitochondrial antibody (AMA) accurate for diagnosing primary biliary cirrhosis?

Bottom Line:  Specificity of AMA is more than 99% and sensitivity is 90-95%.

DynaMed cites reports included in American Association for the Study of Liver Disease (AASLD) recommendations that include diagnosis based on meeting 2 of these 3 criteria:
-Biochemical evidence of cholestasis based mainly on alkaline phosphatase elevation.
-Presence of AMA.
-Histologic evidence of nonsuppurative destructive cholangitis and destruction of interlobular bile ducts

For review of evidence of AMA  specificity (under Etiology, p. 291) and a suggested diagnostic algorithm (Fig 1., p. 292), see
Lindor KD, et al.  Primary biliary cirrhosis.  Hepatology.  2009; 50(1):291-308.

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About Amy

Clinical Informationist at EUH Branch Library
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