Acetylcholine Receptor (AChR) Antibodies Complete Profile with Reflex to MuSK Antibodies

Myasthenia Gravis Evaluation Complete Profile

9 days

AChR-binding assay and blocking antibody: radioimmunoassay (RIA), AChR-modulating antibody: Flow Cytometry

Test Includes:
Acetylcholine Receptor (AChR)-binding Antibodies, Acetylcholine Receptor (AChR)-blocking Antibodies, Acetylcholine Receptor (AChR)-modulating Antibodies Reflex criteria: If Acetylcholine Receptor (AChR)-binding and blocking are normal, will reflex to Muscle Specific Kinase (MuSK) Antibodies

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Includes AChR antibodies testing with reflex to MuSK antibodies if AChR negative. Helps in diagnosing seronegative myasthenia gravis.

Serum

4 mL divided into two tubes

Red-top tube or gel-barrier tube

No special preparation is required for this test. You may eat, drink, and take your medications as normal, unless instructed otherwise by your healthcare provider.

This test does not require any special collection or pre-analytical handling. Follow routine specimen collection protocols.