Striated Muscle Antibody with Reflex to Titer : 266

Test Code
STMUS or 266

Alias/See Also
Anti-Skeletal Muscle Antibody, Skeletal Muscle Antibody, Anti-striated Muscle Antibody, Striational Antibody

CPT Codes

If Striated Muscle Antibody Screen is positive, then Striated Muscle Antibody Titer will be performed at an additional charge (CPT code(s): 86256) (STMABB, 266-2)

Serum separator tube.

Transport Container
Centrifuge serum separator tube and transport, 0.5 mL (Min: 0.1 mL).

Transport Temperature

Specimen Stability
Room temperature: 4 days; Refrigerated: 14 days; Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis; Grossly lipemic; Grossly icteric

Immunofluorescent Assay

Setup Schedule
Tuesday - Saturday

Report Available
3-5 days  (From receipt at performing laboratory)

This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Reference Range

Clinical Significance
Striated Muscle Antibody is more commonly detected in patients over age 60 years with myasthenia gravis than in younger patients. There is a strong correlation between the presence of Striated Muscle Antibody and thymoma in patients with myasthenia gravis.

Performing Laboratory
Quest Diagnostics

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.