Methodology
Radioimmunoassay (RIA); Immunoassay (IA); Western Blot
Synonyms
Acetylcholine Receptor (Muscle AChR) Antibodies; Ach Receptor Ab; AChR Receptor Blocking Ab; Anti-Skeletal Muscle Antibodies; Binding, Blocking, and Modulating Abs; Blocking Ab GAD65 (Glutamic Acid Decarboxylase); Muscle End-Plate Antibodies; Myasthenia Gravis Antibodies; MuSK Myasthenia; Myoid Antibody; Neuronal Potassium Channel Ab; Potassium Channel Antibodies; Thymoma; VGKC; VGPC; Voltage-Gated Postassium Channel Ab
Specimen Type
Serum
Performing Lab
Mayo Medical Lab
Epic ID
Other Reference Test
Lab Test Days
Daily
Standard TAT
3-7 Days
Collection Information
Specimen Required
4-6 mL Blood
Container Type
Red Top (No Additive)
Collection Instructions
Patient should have no general anesthetic or muscle-relaxant drugs in the previous 24 hours prior to collection.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-OK/Frozen-OK
Specimen Stability
Room Temp: 72 Hours; Refrigerated: 28 Days; Frozen: 28 Days
Rejection Criteria
Gross hemolysis; Gross lipemia; Gross icterus
Test Volume Required
3 mL Serum
Minimum Test Volume
2 mL Serum
Included Tests
ACh Receptor (Muscle) BindinG Ab, Striated (Striated Muscle Ab and ACh Receptor (Muscle) Modulating Ab. Reflex tests include: MuSK Autoantibody, GAD65 Ab Assay, CRMP-5-IgG Western Blot, AChR Ganglionic Neuronal Ab and Neuronal (V-G) K Channel Ab.
CPT Codes
83519 (x2), 83520; 83519 (x3); 84182; 86341
Revised
07-22-21