Acetylcholine Receptor (AChR) Binding Ab

General Information

UPHSM LIS Test #: 026642
Testing Time: 2-4 Days
Testing Lab: LabCorp

Specimen Info
Only 1 specimen type required, unless otherwise specified

Volume: 1.0 mL
Temperature: Refrigerated
Tube Type: Serum
Collection Info:
Minimum Volume: 0.3 mL (Note: This volume does not allow for repeat testing.)
Container: Red-top tube or gel-barrier tube
Collection: If a red-top tube is used, transfer separated serum to a plastic transport tube.

Specimen Acceptability

Cause for Rejection:
Gross hemolysis, Gross icterus, Gross lipemia


This assay measures antibodies that precipitate solublized muscle AChR that has been complexed with radiolabeled alpha-bungarotoxin (αBTX). Antibodies that bind to the receptor regions that are not sterically blocked by the αBTX are detected.

Clinical Utilities

Test for the laboratory diagnosis of myasthenia gravis (MG)

CPT Codes


* The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding
is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Reference Range

See Report