Normally, there is no acetylcholine receptor antibody (or less than 0.05 nmol/L) in the bloodstream.
Note: nmol = nanomole
Note: Normal value ranges may vary slightly among different laboratories. Talk to your doctor about the meaning of your specific test results.
The presence of acetylcholinesterase antibody in the blood of someone who has symptoms of myasthenia gravis supports the diagnosis. Not having these antibodies, however, does not rule out myasthenia gravis. About 10 - 15% of people with myasthenia gravis do not have signs of this antibody in their blood.