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Laboratory Test Directory

Acetylcholine Receptor Binding Antibody


Name Method Department Units
Acetylchol Receptor Ab, Bind Quantitative Radioimmunoassay
Send Out nmol/L

Specimen Requirements

Serum Spun

Container Type Container Size Specimen Volume

Red tube, (no anticoagulant), No Gel

3 mL 0.5 mL

Gold tube, (SST) with Gel

3.5 mL 0.5 mL

Room temperature - 2 hour(s)
Refrigerated - 2 week(s)
Frozen - 12 month(s)

Specimen Preparation

  • Centrifuge within 2 hours, separate supernatant and refrigerate
  • Avoid repeated freeze/thaw cycles

Reasons for Rejection

  • Contamination
  • Gross lipemia
  • Gross hemolysis
  • Plasma unacceptable


This test is for the initial diagnostic testing for myasthenia gravis. For reflexive panel, which contains binding, blocking, and modulating antibodies, an XMIS test would need to be ordered for the ARUP test Acetylcholine Receptor Antibody Reflexive Panel (2001571).

CPT Code

  • 83519