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St. John Health System
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Myasthenia Gravis Panel 2

Order Name ACETY BBM
Test Number: 5500250
Revision Date 01/01/2024
Test Name Methodology LOINC Code
Acetylcholine Receptor Binding Antibody
See Test Notes 11034-6 
Acetylcholine Receptor Blocking Antibody
See Test Notes 42937-3 
Acetylcholine Receptor Modulating Antibody
Flow cytometry 30192-9 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 2 mL (1.5) Serum Clot Activator SST Refrigerated
Alternate 1 2 mL (1.5) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Instructions Separate serum from cells ASAP or within 2 hours of collection
Unacceptable Conditions: Contaminated, hemolyzed, or severely lipemic specimens.
Stability After separation from cells: Ambient: 2 hours; Refrigerated: 2 weeks; Frozen: 1 year (avoid repeated freeze/thaw cycles)
GENERAL INFORMATION
Testing Schedule Sun-Sat 
Expected TAT 4-6 Days 
Clinical Use Myastenia Gravis is a neurological disorder characterized by a decrease in acetylcholine receptors. Patients exhibit skeletal muscle weakness and fatigability. Approximately 80% of patients with Myastenia Gravis, excluding ocular involvement only, have detectable acetylcholine receptor antibody. 
CPT Code(s) 86041, 86042, 86043
Internal Comments 6/23/17 changed cpt from 83519x2, 88182TC to 83516x2. 83519 for BLK part - JK
10/5/17 update spec proc - JK
cpt 2024 from 83516x2, 83519 to 86041, 86042, 86043
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab