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Acetylcholine Receptor Binding Antibody with Reflex to MuSK Antibody
Test Code38428
CPT Codes
86041<br><strong>Limited Access Code</strong>
Physician Attestation of Informed Consent
This germline genetic test requires physician attestation that patient consent has been received if ordering medical facility is located in AK, DE, FL, GA, IA, MA, MN, NV, NJ, NY, OR, SD or VT or test is performed in MA.
Includes
If Acetylcholine Receptor Binding Antibody is Negative, then MuSK Antibody Test will be performed at an additional charge (CPT cod(s): 83519)
Preferred Specimen
2 mL serum
Minimum Volume
0.5 mL
Instructions
Allow blood to clot at room temperature. Serum should be separated from cells within one hour.
Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.
Please label each specimen tube with two forms of patient identification. These forms of identification must also appear on the requisition form.
Transport Temperature
Refrigerated (cold packs)
Specimen Stability
Room temperature: 72 hours
Refrigerated: 14 days
Frozen: 30 days
Refrigerated: 14 days
Frozen: 30 days
Methodology
Radioimmunoassay (RIA)
FDA Status
This test was developed and its analytical performance characteristics have been determined by Athena Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Setup Schedule
Set up: As needed; Report available: 7-14 days
Report Available
Reports in 8 to 16 days.
Clinical Significance
Anti-acetylcholine receptor binding antibodies (anti-AChR) are associated with Myasthenia Gravis (MG) and are found in approximately 85% of MG patients. Approximately 8% to 10% of all MG cases and 20% to 50% of generalized MG cases who lack anti-AChR antibodies have autoantibodies against muscle- specific kinase (anti-MuSK).
