Acetylcholine receptor (AChR) binding Ab

Alphabetical Test listing

Acetylcholine receptor (AChR) binding Ab-994

Acetylcholine receptor (AChR) binding Ab
AChR binding antibodies
Myasthenia gravis antibody

In vitro diagnostic semiquantitative determination of autoantibodies against the acetylcholine receptor in human serum and plasma. This assay is the primary test for confirming the diagnosis of acquired Myasthenia gravis.


No isotopes administered 24 hours prior to venipuncture.

1.0 mL
0.3 mL

Immediatley following collection, mix sample by gently inverting 5 times

  1. Allow sample to clot for a minimum of 30 minutes
  2. Spin

Gold serum separator (SST) tube

  1. Allow sample to clot
  2. Spin
  3. Transfer serum to a Transfer vial/tube with cap - 12mL (LabCorp) labelled as "serum" within 45 minutes of collection.



Ambient (preferred) - 14 days

Refrigerated - 14 days

Frozen - 14 days

   Freeze/thaw cylces - 3

  • Gross hemolysis
  • Gross icterus
  • Gross lipemia
LabCorp Burlington (085902): R-NX
Mn - Fr
2 - 4 days

This assay measures antibodies that precipitate solubilized muscle AChR that has been complexed with radiolabeled alpha-bungarotoxin (αBTX).
Antibodies that bind to the receptor regions that are not sterically blocked by the αBTX are detected.


Negative:   0.00 - 0.24 nmol/L

Result 11034-6