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MYOGLOBIN, RANDOM URINE
Test CodeLAB412
CPT Codes
83874
Preferred Specimen
Urine, random specimen in a clean plastic collection cup
Minimum Volume
5 mL urine
Instructions
Review color of samples and perform urine dipstick testing for occult blood and pH. Aliquot 5-10 mls of sample into a tube with 2 patient identifiers. The pH of the sample must be 8 or higher for submission. Depending on the pH of the sample, add 1-3 drops of concentrated NaOH to the aliquot, mix well and repeat pH testing. Repeat step 4 until the pH of the sample is 8or greater. If unable to adjust eh pH of urine, consider sendout serum myoglobin.
Transport Temperature
Refrigerated
Specimen Stability
Ambient: Unstable
Refrigerated: 24 hours (must be at pH of 8-9 within 2 hours of collection)
Refrigerated: 24 hours (must be at pH of 8-9 within 2 hours of collection)
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Contaminated samples.
For UML Clients: urine not at pH of 8 or higher before submission. Pleases see instructions to correct the ph.
For UML Clients: urine not at pH of 8 or higher before submission. Pleases see instructions to correct the ph.
Methodology
Centrifugal Filtration and Urine Dipstick using a Laboratory Developed Test (LDT)
Setup Schedule
Sunday-Saturday
Reference Range
Negative
Performing Laboratory
West Virginia University Hospital, Inc.
