F-Actin (Smooth Muscle) Antibody, IgG
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Within 24 hours
New York DOH Approval Status
This test is New York DOH approved.
- Patient Preparation
- Serum separator tube
- Specimen Preparation
- Separate serum from cells ASAP or within 2 hours of collection. Transfer 0.5 mL serum to an ARUP Standard Transport Tube. (Min: 0.3 mL)
- Storage/Transport Temperature
- Unacceptable Conditions
- Urine or plasma. Contaminated, heat-inactivated, hemolyzed, icteric, or severely lipemic specimens.
- After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
Effective May 16, 2011
|19 Units or less||Negative|
|20-30 Units||Weak Positive-Suggest repeat testing in two to three weeks with fresh specimen.|
|31 Units or greater||Positive-Suggestive of autoimmune hepatitis type 1 or chronic active hepatitis.|
F-actin antibodies have been shown to have greater sensitivity and specificity for autoimmune liver disease than anti-smooth muscle antibodies.
|Component Test Code*||Component Chart Name|
|0055248||F-Actin (Smooth Muscle) Ab, IgG by ELISA|
- Actin Antibody
- Anti-Actin Antibody
- Anti-F-Actin Antibody
- Antiactin Antibody