Test Overview
RIA and Flow Cytometry
Interpretive report provided
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
4 - 11 days
Specimen Requirements
Patient should have no general anesthesia or muscle-relaxant drugs in the prior 24 hours. Also no radioisotopes. Collect specimen in a red top or SST tube. Spin and aliquot into a screw capped plastic tube and send to Specimen Processing refrigerated.
Additional Information
If acetylcholine receptor (AChR)-binding antibodies are greater than 0.02 nmol/L, then AChR muscle modulating antibody will be performed at an additional charge. If AChR-binding antibodies are 0.02 nmol/L or less, then muscle-specific kinase (MuSK) autoantibody will be performed at an additional charge. If unable to report AChR binding antibody due to interfering substances, then AChR muscle modulating antibody will be performed at an additional charge. If unable to report AChR binding antibody due to interfering substances and AChR muscle modulating antibody is negative, then MuSK autoantibody will be performed at an additional charge. By ordering this test the clinician acknowledges that additional reflex testing will be performed and billed at a separate additional charge if indicated. Test performed by Mayo Clinic Laboratories