Acetylcholine Receptor (AChR)-Binding Antibodies, Serum
Test Code: 085902
Performing Lab: LabCorp
CPT Code: 86041 001
Synonym
Acetylcholine Receptor Binding Antibody; AChR-Binding Antibodies; ACRAB; Myasthenia Gravis Antibody
Specimen Type
Serum
Specimen Container
Red-top tube or gel-barrier tube
Volume
1 mL
Minimum Volume
0.3 mL (NOTE:This volume does NOT allow for repeat testing.)
Specimen Handling
If red-top tube is used, transfer separated serum to a plastic transport tube.
Patient Prep
No isotopes administered 24 hours prior to venipuncture
Unacceptable Conditions
Gross hemolysis, Gross icterus, Gross lipemia radioisotopes; plasma specimen
Temperature
Refrigerate
Methodology
This assay measures antibodies that precipitate solublized muscle AChR that has been complexed with radiolabeled alpha-bungarotoxin (aBTX). Antibodies that bind to the receptor regions that are not sterically blocked by the aBTX are detected.
Stability
Room Temperature: 14 days
Refrigerated: 14 days
Frozen: 14 days
Refrigerated: 14 days
Frozen: 14 days
| Result Code | Result Name | LOINC |
|---|---|---|
| 085904 | AChR Binding Abs, Serum | 11034-6 |
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