How accurate is the Acetylcholine Receptor Antibody (MG) test?
The test for myasthenia gravis performed in our laboratory (acetylcholine receptor antibody titer determined by radioimmunoassay) is 98% accurate for generalized acquired myasthenia gravis. 2% of the cases will be seronegative. If the onset of clinical signs is recent, we suggest retesting in 3 weeks. The AChR antibody test does not diagnose cases of congenital MG. If congenital myasthenia is suspected, the veterinarian should contact Dr. Shelton for consultation. For commonly asked question about Myasthenia Gravis, please refer to our December 1999 Case of the Month. Other Cases of the Month pertaining to MG include November 1999, April 2001, February 2002 and October 2004.
The test for myasthenia gravis performed in our laboratory (acetylcholine receptor antibody titer determined by radioimmunoassay) is 98% accurate for generalized acquired myasthenia gravis. 2% of the cases will be seronegative. If the onset of clinical signs is recent and the antibody test negative, retesting in 3 weeks is suggested. The AChR antibody test does not diagnose cases of congenital MG. If congenital myasthenia is suspected, the veterinarian should contact Dr. Shelton for consultation. For commonly asked question about Myasthenia Gravis, please refer to our February 2010 Case of the Month. Other Cases of the Month pertaining to MG include November 1999, April 2001, February 2002 and October 2004.
