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St. John Health System
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MUSK (Muscle-Specific Receptor Tyrosine Kinase) Antibody

Order Name MUSK Ab
Test Number: 6900527
Revision Date 01/02/2024
Test Name Methodology LOINC Code
MUSK (Muscle-Specific Receptor Tyrosine Kinase) Antibody
Radioimmunoprecipitation assay 51716-9 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5 mL) Serum Clot Activator SST Refrigerated
Alternate 1 2.0 mL (1 mL) Serum Clot Activator (Red Top, No-Gel) Refrigerated
Instructions Notes: 0.5 mL (Note: This volume Does not allow for repeat testing.)
Specimen Type: Red-top tube or gel-barrier tube
Specimen Storage: Refrigerated or Frozen
Specimen Collection: Allow a minimum clotting time of 30 to 60 minutes with serum separation within 2 hours of collection. Send serum in a plastic transport tube. To avoid delays in turnaround time when requesting multiple tests on frozen samples, please submit separate frozen specimens for each test requested.
Special Instructions: Testing is performed at Esoterix Endocrinology Laboratory: ES#804600
Specimen Stability: Ambient: 14 days, Refrigerated : 14 days, Frozen: 1 year
GENERAL INFORMATION
Expected TAT 7 - 15 days 
CPT Code(s) 86366
Internal Comments 2/22/2017 - Added to RML Online - AK
3/14/17 - added LOINC Code - JLS
12/28/17 - increased the minimum specimen volume for this test from 0.5mL to 1mL. - JK
06/06/2019: Updated collection info, TAT - SN
6/12/19 updated link.. removed old link -= JK
Reference Lab: ARUP
ARUP Test Code: 2012420
Click Here to view information on the ARUP website.
1/2/24 from 83519 to ?86366
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab