Days Set Up
Tuesday, Thursday
Analytic Time

3 days

MiChart Code
MuSK Antibody, Mayo Sendout
Soft Order Code
MMUSK

Test Updated:

Synonyms

MUSK
MuSK Ab
Muscle-specific receptor tyrosine kinase (MuSK) Antibody

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Test FAQ

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Test Overview

Test Methodology

RIA

Test Usage

Diagnosis of autoimmune muscle-specific kinase (MuSK) myasthenia gravis. Second-order test to aid in the diagnosis of autoimmune myasthenia gravis when first-line serologic tests are negative. Establishing a quantitative baseline value for MuSK antibodies that allows comparison with future levels if weakness is worsening.

Reference Range

< or =0.02 nmol/L

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Instructions

Collect specimen in a red top (preferred) or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Red Top Tube
Yellow Top Tube
Normal Volume
1.5 mL serum
Minimum Volume
1 mL serum

Billing Information

CPT Code
83519
Pro Fee Code
 
Insurance Auth Info
 
LOINC
 

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.

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