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Actin (smooth Muscle) Antibody (ASMA)

Test Code
6643


Alias/See Also
antiactin, ASMA, smooth muscle antibodies


CPT Codes
83516

Preferred Specimen
Serum


Minimum Volume
0.3 ml


Transport Container
Red-top tube or gel-barrier tube


Transport Temperature
Room Temperature


Specimen Stability
14 Days. Freeze/thaw cycles stable x3


Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolysis; lipemia; gross bacterial contamination; heat-treated specimen; specimen with preservative added


Methodology
Enzyme-linked immunosorbent assay (ELISA)

Limitations
Antiactin antibodies have been reported at low levels in 3% to 18% of sera from the general healthy population. The presence of immune complexes in the patient's sample may produce false positives in this assay. Not all smooth muscle positive samples will have actin antibodies.


Reference Range
Negative=0-19, weak positive=20-30, moderate to strong positive >30




The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.