Skip to main content

Login to North West London Pathology – consumables service

If you need a new account or you have a query about your order, please telephone the pathology call centre on 0203 313 5353.

If you have forgotten your password you can reset this yourself. Please click here if you have forgotten your password.

Results Line and Enquiries

0203 313 5353

MuSK antibodies

Category Immunology
Test background

Antibodies to the muscle-specific receptor tyrosine kinase are involved in the pathogenesis of acetylcholine receptor (ACR) antibody-negative myasthenia gravis. Testing for these antibodies should be considered in the 20 % of patients with clinical symptoms of myasthenia gravis who do not demonstrate antibodies to the ACR.

Clinical Indications

Diagnosis of myasthenia gravis with or without equivocal anti-AChR findings

Reference range


Sample & container required RST (rust top)
Sample volume 5-10 mL (1 mL serum)
Turnaround time 28 days

Not currently performed in house; this test is referred to the Department of Immunology at the Churchill Hospital in Oxford.