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St. John Health System
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Myasthenia Gravis Panel 1

Order Name MYAS GRAV1
Test Number: 5551325
Revision Date 01/01/2024
Test Name Methodology LOINC Code
Acetylcholine Receptor Binding Antibody
See Test Notes 11034-6 
Striated Muscle Antibody Screen with Titer
Immunofluorescence Assay (IFA) 5372-8 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 2 (1 mL) Serum Clot Activator SST Refrigerated
Alternate 1 2 (1 mL) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Instructions Separate serum from cells ASAP or within 2 hours of collection.
Combined Stability for both tests:
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
GENERAL INFORMATION
Testing Schedule Mon - Sat 
Expected TAT 4-5 Days  
Clinical Use Myasthenia Gravis is a neurological disorder characterized by a decrease in acetylcholine receptors. Patients exhibit skeletal muscle weakness and fatigability. 
Notes See individual panel components for more information for those tests.
CPT Code(s) 86041, 86255
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab