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HelpTest ID FACT Filamentous-Actin (F-actin) Antibody, IgG, Serum
Useful For
Evaluation of patients with hepatitis of unknown origin associated with hypergammaglobulinemia and/or abnormal liver enzymes
This test may also be useful for confirming positivity for smooth muscle antibodies.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumSpecimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 0.5 mL Serum
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 21 days |
| Frozen | 21 days |
Reference Values
Negative: <20.0 U
Weak Positive: 20.0-30.0 U
Positive: >30.0 U
Day(s) Performed
Monday
CPT Code Information
83516
Report Available
2 to 8 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
| Heat treated specimens | Reject |
Secondary ID
61620Testing Algorithm
For more information First-Line Screening for Autoimmune Liver Disease Algorithm.