3 - 7 days
Update Type: Test Resumed
Test Updated: 09/02/2020
Acetylcholine Receptor Antibodies
ACh Receptor (Muscle) Binding Antibody
ACh Receptor (Muscle) Modulating Antibody
AChR Ganglionic Neuronal Antibody (reflex)
CRMP-5 IgG (reflex)
Striational (Striated Muscle) Antibody
P/Q Type Calcium Channel Antibody
N Type Calcium Channel Antibody
CRMP-5-IgG Western Blot, S
AChR Ganglionic Neuronal Ab, S
Looking to order a test?
We’ve provided helpful links to make ordering easy.Find a Requisition
All specimens should be accompanied by a requisition.Submitting Specimens
Learn about how to properly label and where to ship specimens.Order Kits and Supplies
MLabs provides all the supplies necessary for the collection of specimens.Test FAQ
Visit our provider FAQ and learn about common questions to ordering tests.
Recommended for patients presenting with an acquired defect of neuromuscular transmission in whom the differential diagnosis includes LES. It is not recommended for patients with a past history of, or risk factors for, lung cancer and/or concurrent neurological symptoms/signs not attributable to LES; for those situations, order Paraneoplastic Autoantibody Evaluation (Mayo 83380). Testing for a newly recognized alternative antibody of MG (muscle-specific receptor tyrosine kinase [MuSK]) is indicated when all tests are negative. MuSK antibody testing is available on request.
Muscle AChR Binding Ab: <=0.02 nmol/L; Muscle AChR Modulating Ab: 0 - 20%; Striational Ab: <1:120; P/Q Type Calcium Channel Binding Ab: <0.02 nmol/L; N Type Calcium Channel Binding Ab: <0.03 nmol/L; CRMP-5-IgG Western Blot: Negative; AChR Ganglionic Neuronal Ab: <=0.02 nmol/L.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.