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St. John Health System
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Lambert-Eaton Myasthenic Syndrome (LEMS) Panel

Order Name LAMB EATON
Test Number: 5503127
Revision Date 03/10/2026
Test Name Methodology LOINC Code
Striated Muscle Antibody Screen with Titer
Immunofluorescence Assay (IFA) 5372-8 
Voltage-Gated Calcium Channel (VGCC) Antibody Assay
Quantitative Radioimmunoassay 31024-3 
Acetylcholine Receptor Binding Antibody
See Test Notes 11034-6 
Acetylcholine Receptor Modulating Antibody
Flow cytometry 30192-9 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 4 mL (2 mL) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Instructions Separate serum from cells ASAP or within 2 hours of collection.
GENERAL INFORMATION
Testing Schedule Assay Dependant 
Expected TAT Assay Dependant  
Notes See individual panel components for more information for those tests.
3805400 - Striated Muscle Antibody Screen with Titer
5502375 - Voltage-Gated Calcium Channel (VGCC) Antibody Assay
5500010 - Acetylcholine Receptor Binding Antibody
5516500 - Acetylcholine Receptor Modulating Antibody
CPT Code(s) 83519x3, 86255
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab