Test Overview
Test Methodology

RIA and Flow Cytometry

Reference Range *

Interpretive report provided

Test Details
Update Type: Test Resumed
Test Updated: 12/29/2021
Days Set Up
Monday - Friday
Analytic Time

4 - 7 days

Soft Order Code
MGMR
Laboratory
Sendout
Reference Laboratory
Mayo MGMR
Section
Special Testing
Specimen Requirements
Collection

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.

Normal Volume
3 mL serum
Minimum Volume
2 mL serum
Storage Temperature
Refrigerated preferred, ambient or frozen acceptable
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

Billing
CPT Code
83519
NY State Approved
No