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ACREM / ARBI-M
ACETYLCHOLINE RECEPTOR BINDING ANTIBODIES, SERUM

Test Code ACREM / ARBI-M 
Test ACETYLCHOLINE RECEPTOR BINDING ANTIBODIES, SERUM 
Methodology Radioimmunoassay (RIA)
(This is the primary diagnostic test for myasthenia gravis.) 
Description Useful for confirming the diagnosis of MG, distinguishing acquired disease (majority positive) from congenital disease (negative), detecting subclinical MG in patients with thymoma or graft-vs.-host disease, monitoring disease progression in MG or response to immunotherapy
Also useful as an adjunct to the test for P/Q-type calcium channel binding antibodies as a diagnostic aid for Lambert-Eaton Syndrome (LES) or primary lung carcinoma

See "Myasthenia Gravis (MG) Tests." 

Specimen Draw blood in either a plain, red-top tube or serum gel tube. Spin down and send 1.5 mL (minimum: 1.0 mL) of serum refrigerated. 
Reference Values <= 0.02 nmol/L 
Analytic Time 3 Days 
Day(s) Test Set Up Monday through Thursday, Sunday 
CPT Code(s) 83519  

Special Instructions