Specimen Collection Manual and Test Catalog
ACETYLCHOLINE RECEPTOR BLOCKING AB
Geisinger Epic Procedure Code: LAB1509 Geisinger Epic ID: 45091SPECIMEN 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
Processing instructions:
Centrifuge within 1 hour of collection.
Transport temperature:
Refrigerated (cold packs).
Specimen stability:
Room temperature: 14 days. Refrigerated: 14 days. Frozen: 30 days.
TEST DETAILS
CPT code(s):
86042
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.
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, ARBAB
Clinical significance:
Review Date:
12/04/2024 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.
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