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HelpTest Code U Myo Urine, Myoglobin
Useful For
Myoglobin facilitates the transfer or transport of oxygen from the extacellular fluid into the muscle cells. Whenever there is severe injury to striated muscle tissue, considerable quantities of myoglobin are released into the extracellular fluid, eventually enter the blood, and are then excreted by the kidneys. Myoglobinuria may occur following crush injuries to the extremities, after high voltage electric shock and occasionally after severe muscular exertion.
Patient Preparation
No special patient preparation required
Collection Method
Clean catch urine
Minimum Volume
5 mL
Container
Sterile Cup
Preferred Specimen
Urine in Sterile container
Acceptable Specimens
Urine in Sterile container
Reference or Target Ranges
Negative
Reportable Units
Positive/Negative
Critical Value
Not defined for this assay
Reasons for Rejection
| Hemolysis Threshold | N/A |
| Icterus Threshold | N/A |
| Lipemia Threshold | N/A |
| Other | QNS, improperly labeled, improper container, specimen > 2 hours old |
Specimen Stability
| Ambient | 2 hours |
| Refrigerated (2°C to 8°C) | N/A |
| Frozen(-70°C to 0°C) | N/A |
Performance Information
| Days and Time Performed | 24/7 |
| Expected Turn Around Time | STAT: Within 1 hour of arrival in lab Routine: Within 4 hours of arrival in lab |
| Stat Availabilty | Yes |
| Performing Bench | UH UA |
| Methodology/Method Description | Amicon Ultra – 15 Centrifugal Filters Ultracel – 30K |
Additional Information/Important Notes
Limitations of Procedure
- Low sample recovery in the concentrate can be due to absorptive losses, over-concentration, or passage of sample through the membrane.
- The Amicon Filter Unites combined with the Siemens Multistix 10 SGs has a sensitivity of 150-620 mcg/L in the detection of myoglobin.
CPT Codes
81005