Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

ACETYLCHOLINE RCP BLOCKING AB

ORDERING INFORMATION:
Sunquest Test Code:
ARBAB      Geisinger Epic Procedure Code: ARBAB         Geisinger Epic ID: 45091

SPECIMEN COLLECTION
Specimen type:
Serum
Preferred collection container:
Alternate Collection Container:
6 mL red-top (plain, non-serum separator) tube
Specimen required:
0.2 mL serum
Special notes:
See Specimen Processing Instructions.

SPECIMEN PROCESSING
Specimen processing instructions:
Centrifuge within 1 hour of collection. 
Transport temperature:
Refrigerated (cold packs).
Specimen stability:
Room temperature: 14 days. Refrigerated: 14 days. Frozen: 1 year.

TEST DETAILS
CPT code(s):
83519
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Methodology:
Immunoassay
Synonyms:
ACETYLCHOLINE RECEPTOR BLOCKING ANTIBODY, Quest test code 34459
Clinical significance:
Myasthenia gravis (MG) is a neuromuscular disorder characterized by muscle weakness, most commonly due to autoantibody-mediated loss of functional acetylcholine receptors (AChR) in the neuromuscular junction. This assay is most useful when the acetylcholinesterase receptor modulating antibodies are positive. The assay for blocking antibodies is useful in monitoring response to therapy.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Mon, Wed, Fri a.m.; Report available: Next day    
Performed stat? No
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