Primary sclerosing cholangitis laboratory findings
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Dima Nimri, M.D. [2]
Overview
Laboratory Findings
Liver Function Tests
Primary sclerosing cholangitis typically has a cholestatic clinical picture with elevation of ALP, and aminotransferases (AST and ALT) may be elevated to 2-3 times of the upper normal level. However, LFTs may be normal.
Immunoglobulins
- Hypergammaglobulinemia
- Elevated IgM levels
- Elevated IgG4 levels
Autoantibodies and Serology
One or more of the following autoantibodies may be present in patients with primary sclerosing cholangitis:
- Anti-neutrophil cytoplasmic antibody (p-ANCA)
- Anti-nuclear antibody (ANA)
- Anti-smooth muscle antibody (Anti-Sm)
- Anti-endothelial antibody
- Anti-cardiolipin antibody
- Thyroperoxidase
- Thyroglobulin
- Rheumatoid factor (RF)
References