|
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Myoglobin, Urine
Test CodeMYOGRU
Alias/See Also
661
CPT Codes
83874
Preferred Specimen
4 mL random urine submitted in a myoglobin transport tube
Minimum Volume
4 mL
Instructions
Add exactly 4 mL random urine to a Myoglobin transport tube within one hour of collection.
Exactly 4 mL of urine in the Myoglobin transport tube is required to achieve the required pH of >8.0. More than 4 mL of urine will lower the pH outside acceptable range.
Note: Myoglobin in urine is very unstable unless the pH is between 8.0 and 9.0.
Collect and ship specimens Monday-Thursday only.
Exactly 4 mL of urine in the Myoglobin transport tube is required to achieve the required pH of >8.0. More than 4 mL of urine will lower the pH outside acceptable range.
Note: Myoglobin in urine is very unstable unless the pH is between 8.0 and 9.0.
Collect and ship specimens Monday-Thursday only.
Transport Container
Transport Temperature
Refrigerated
Specimen Stability
Room temperature: Unacceptable
Refrigerated: 72 hours
Frozen: 72 hours
Refrigerated: 72 hours
Frozen: 72 hours
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Received in a non-Myoglobin transport tube • Specimen received past stability • pH <8.0 • Timed urine • More than 4 mL urine in Myoglobin transport tube • Received room temperature
Methodology
Nephelometry
Setup Schedule
Night
Reference Range
<28 mcg/L
Clinical Significance
The breakdown of skeletal muscle (rhabdomyolysis) releases myoglobin. Very high concentrations of myoglobin may increase the risk of acute renal failure.