This is an important test that is used to diagnose myasthenia gravis.

Venous blood
1 tests included
60 days turnaround



About Musk

What is a MuSK test?

The muscle-specific tyrosine kinase (MuSK) blood test screens for anti-MuSK antibodies. MuSK is a membrane enzyme which is important for the development of acetylcholine receptors on muscles. The presence of anti-MuSK antibodies is an indicator of Myasthenia gravis.

Myasthenia gravis is a rare neuromuscular condition which causes muscle weakness. The disease is caused by the immune system erroneously producing antibodies which lead to the destruction of receptors of neurotransmitter acetylcholine on the muscles.

Acetylcholine is a signalling molecule that transfers nerve impulses to muscles, destruction of the receptors on muscles means that they do not respond to the acetylcholine signal and do not function properly. Symptoms of myasthenia gravis typically present in muscles controlling the eyes, face and swallowing. These often manifest as droopy eyelids, double vision, difficulty making facial expressions, difficulty swallowing and difficulty breathing.

Why take the test?

This test screens for autoantibodies which target muscle-specific tyrosine kinase (MuSK). It is used to diagnose myasthenia gravis.


What's tested


How it works



Order your kit

Just order a test online and get your kit delivered right to you door. Your kit contains everything you need for the test.



Take your test and post

Follow our simple instructions to take your sample and post back the enclosed prepaid envelope to our accredited lab for processing. We also offer home or workplace visits by a qualified nurse.



Get results directly to your dashboard

You will receive an email notification from our medical team when your results are available on your secure personalised health dashboard.