TEST CATALOG ORDERING & RESULTS SPECIMEN HANDLING CUSTOMER SERVICE EDUCATION & INSIGHTS
Test Catalog

Test ID: MGRM    
Myasthenia Gravis (MG) Evaluation with MuSK Reflex, Serum

Testing Algorithm Delineates situations when tests are added to the initial order. This includes reflex and additional tests.

If acetylcholine receptor (AChR) modulating antibodies are > or =90% and striational antibodies are > or =1:120, then ganglionic AChR neuronal autoantibody, glutamic acid decarboxylase autoantibody, neuronal voltage-gated potassium channel autoantibody, and collapsin response-mediator protein-5 (CRMP-5)-IgG Western blot will be performed at an additional charge.

 

If AChR-binding antibodies are < or =0.02 and AChR-modulating antibodies are < or =20%, then muscle-specific kinase (MuSK) autoantibody will be performed at an additional charge.

 

See Myasthenia Gravis Evaluation with MuSK Reflex Algorithm in Special Instructions.

Specimen Type Describes the specimen type validated for testing

Serum

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Patient Preparation: Patient should have no general anesthetic or muscle-relaxant drugs in the preceding 24 hours.

Container/Tube:

Preferred: Red top

Acceptable: Serum gel

Specimen Volume: 3 mL

Special Instructions Library of PDFs including pertinent information and forms related to the test

Forms

If not ordering electronically, complete, print, and send a Neurology Specialty Testing Client Test Request (T732) with the specimen.

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

2 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

Hemolysis Mild OK; Gross reject
Lipemia Mild OK; Gross reject
Icterus Mild OK; Gross reject
Other NA
 

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
SerumRefrigerated (preferred)28 days
 Frozen 28 days
 Ambient 72 hours