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Geisinger Medical Laboratories Test Catalog
ACETYLCHOLINE RECEPTOR BLOCKING AB |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB1509 Geisinger Epic ID: 45091 | |
SPECIMEN COLLECTION |
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Specimen type: |
Serum | |
Preferred collection container: |
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Alternate Collection Container: |
6 mL red-top (plain, non-serum separator) tube
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Specimen required: |
0.2 mL serum | |
Special notes: |
See Specimen Processing Instructions. | |
| SPECIMEN PROCESSING |
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Specimen 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 |
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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 |
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Synonyms: |
ACETYLCHOLINE RECEPTOR BLOCKING ANTIBODY, Quest test code 34459 ARBAB
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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. | |