Acetylcholine Receptor Antibodies
Department of Immunology
Notes
- A specific antibody for myasthenia gravis. Positive in about 90% of patients with generalised disease and in 75% of patients with only ocular symptoms. The level of antibody is not an index of disease severity.
- Serial measurements not helpful.
- Test performed at Southmead Hospital, Bristol
Sample Requirements
Adult
5ml Gold-top SST tube or 3.5ml Rust-top gel tube
Paediatric
1ml Serum Sample
Turnaround Times
2 weeks
Reference Ranges
| Range (nmol/l) | Interpretation |
|---|---|
| <0.50 | Negative |
| 0.50 - 0.75 | Equivocal |
| >0.75 | Positive |