ARBI - Overview: Acetylcholine Receptor (Muscle AChR) Binding Antibody, Serum

Test Catalog

Test ID: ARBI    
Acetylcholine Receptor (Muscle AChR) Binding Antibody, Serum

Useful For Suggests clinical disorders or settings where the test may be helpful

Confirming the diagnosis of myasthenia gravis (MG)


Distinguishing acquired disease (90% positive) from congenital disease (negative)


Detecting subclinical MG in patients with thymoma or graft-versus-host disease


Monitoring disease progression in MG or response to immunotherapy


An adjunct to the test for P/Q-type calcium channel binding antibodies as a diagnostic aid for Lambert-Eaton myasthenic syndrome (LES) or primary lung carcinoma

Testing Algorithm Delineates situation(s) when tests are added to the initial order. This includes reflex and additional tests.

This is the primary diagnostic test for myasthenia gravis.


See Paraneoplastic Evaluation Algorithm in Special Instructions

Special Instructions and Forms Describes specimen collection and preparation information, test algorithms, and other information pertinent to test. Also includes pertinent information and consent forms to be used when requesting a particular test

Method Name A short description of the method used to perform the test

Radioimmunoassay (RIA)

NY State Approved Indicates the status of NY State approval and if the test is orderable for NY State clients.


Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name

ACh Receptor (Muscle) Binding Ab

Aliases Lists additional common names for a test, as an aid in searching

Acetylcholine Receptor (Muscle AChR) Antibodies
AChR (Acetylcholine Receptor)
Anti -Neuromuscular Junction Receptor Antibodies
Myasthenia Gravis Antibodies
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