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Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog
AQUAPORIN-4 ANTIBODY (IGG), CBA |
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ORDERING INFORMATION: |
Geisinger Epic Procedure Code: LAB1775 Geisinger Epic ID: 48320 | |
SPECIMEN COLLECTION |
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Specimen type: |
Serum or CSF | |
Preferred collection container: |
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Alternate Collection Container: |
Sterile specimen container
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Specimen required: |
0.5 mL serum or CSF, minimum 0.3 mL | |
| SPECIMEN PROCESSING |
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Specimen processing instructions: |
Serum: Centrifuge and aliquot. CSF: Do not centrifuge | |
Transport temperature: |
Room temperature. | |
Specimen stability: |
Room temperature: 7 days. Refrigerated: 14 days. Frozen: 21 days. | |
Rejection criteria: |
Serum separator tube (SST). | |
TEST DETAILS |
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CPT code(s): |
86052 | |
| 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: |
Cell Binding Assay-Immunofluorescence Assay |
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Synonyms: |
Quest code 93893
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Clinical significance: |
Aquaporin-4 Antibody (IgG), CBA - Antibody to Aquaporin 4 causes neuromyelitis optica (NMO), a demyelinating disease of the central nervous system often confused diagnostically with multiple sclerosis (MS) and/or transverse myelitis. NMO causes optic neuritis and transverse myelitis. Early discrimination between MS and NMO is important, as optimum treatment for both diseases may differ considerably. | |