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HelpTest Code MUSK Muscle-Specific Kinase (MuSK) Autoantibody, Serum
Additional Codes
| Mayo | MUSK |
| Epic ID | LAB2619 |
Specimen Type
SerumSpecimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Plastic vial
Specimen Volume: 1.5 mL
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 28 days |
| Frozen | 28 days | |
| Ambient | 72 hours |
UPH Waterloo Region Lab Test Catalog
Note:
Transport refrigerated.
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
| Gross icterus | Reject |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Method Name
Radioimmunoassay (RIA)
Useful For
Diagnosis of autoimmune muscle-specific kinase (MuSK) myasthenia gravis
Second-order test to aid in the diagnosis of autoimmune myasthenia gravis when first-line serologic tests are negative
Establishing a quantitative baseline value for MuSK antibodies that allows comparison with future levels if weakness is worsening
Day(s) Performed
Monday through Friday
Report Available
3 to 10 daysReference Values
≤0.02 nmol/L
CPT Code Information
86366