The Mayo Clinic invented the test. Anything over 0.02 is indicative of MG. Period. What is important is not the degree over positive; the fact that it is positive is what doctors go by (plus the clinical exam). I'm sure they'll do more testing (SFEMG).

ARBI - Clinical: Acetylcholine Receptor (Muscle AChR) Binding Antibody, Serum

I dare any neurologist to argue with that.

Annie