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SMABS / 15043Q
SMOOTH MUSCLE ANTIBODIES, SERUM

Test Code SMABS / 15043Q 
Test SMOOTH MUSCLE ANTIBODIES, SERUM 
Methodology Enzyme-linked Immmunosorbent Assay (ELISA) 
Description Useful for the diagnosis of autoimmune liver disease 
Specimen Draw blood in either a plain red-top or serum gel tube. Spin down and send 0.5 mL (minimum volume: 0.1 mL) of serum refrigerated in a plastic screw-capped vial. 
Reference Values _< 20 Units: Negative
20-30 Units: Weak positive
_> 30 Units: High positive
This ELISA assay is based on purified F-Actin IgG
antibodies. IgG antibodies to F-Actin are present in
approximately 75% of patients with autoimmune hepatitis
type 1, 65% with autoimmune cholangitis, 30% with primary
biliary cirrhosis, and 2% of the healthy population. 
Analytic Time 2 Days 
Day(s) Test Set Up Monday through Friday 
CPT Code(s) 83516