Test ID: ZG798
Component(s): Z1065 MuSK Abs, Serum LOINC: 57436-8
CPT code: 86366
LOINC:
Specimen Type: Red or SST
Frequency: 7 – 15 days
Instructions: 1 mL Serum from Red or SST, Refrigerated, Separate within two hours . Min 0.5 mL.
Text: Diagnosis of muscle‐specific kinase (MuSK) myasthenia gravis. Secondary or reflex test to aid in the diagnosis of autoimmune myasthenia gravis when first‐line tests (acetylcholine receptor antibodies) are negative. Serial measurement of MuSK antibodies to monitor MuSK MG treatment as MuSK antibody titer correlate with disease severity.
Methodology: Radioimmunoprecipitation Assay (RIPA)