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St. John Health System
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Index:

Myoglobin, Quantitative, Random Urine

Order Name MYOGLOBN U
Test Number: 3001050
Revision Date 12/12/2022
Test Name Methodology LOINC Code
Myoglobin, Quantitative, Random Urine
Immunochemiluminometric (ICMA) 2641-9 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1mL (0.5) Urine, Random Sterile Urine container Frozen
Instructions Notes: 1.0 mL (Note: This volume Does NOT allow for repeat testing).
Specimen Type: Plastic urine container, no preservative
Specimen Storage: Refrigerate
Specimen Collection: Not Available
Specimen Stability: Ambient: Unstable, Refrigerated : 3 days, Frozen: 14 days
GENERAL INFORMATION
Expected TAT 3 - 4 days 
Clinical Use Useful for confirming the presence of a myopathy associated with injury to skeletal or cardiac muscle, metabolic disease and renal failure. 
Notes Labcorp Test Code: 003079
CPT Code(s) 83874
Internal Comments pre 7/14/14 instructions
First Morning void clean catch urine or Random clean catch urine. No preservative!
Stability Room temperature: Unacceptable, Refrigerated: 48 Hours, Frozen: 30 Days.
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2/9/15 CHANGE FROZEN FROM 7 DAYS TO 72 HOURS
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LOINC 2641-9 ADDED 7/27/15
Service Provided By Labcorp Oklahoma, Inc.
Lab Section Reference Lab