Myoglobin, Urine
Main Content
Test Code: 661
CPT Code: 83874
Methodology: Fixed rate time nephelometry
Clinical Significance: The breakdown of skeletal muscle (rhabdomyolysis) releases myoglobin. Very high concentrations of myoglobin may increase the risk of acute renal failure.
Alternate Names: N/A
Supply#: U87 - Myoglobin Transport Tube
Preferred Specimen(s): Random urine submitted in a myoglobin transport tube
Preferred Volume: 4mL
Collection Instructions: Add exactly 4mL random urine to a myoglobin transport tube within one hour of collection. Freeze and ship frozen. Exactly 4mL of urine in the myoglobin transport tube is required to achieve the required pH of >8.0 more than 4mL of urine will lower the pH outside of 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: Myoglobin Transport Tube
Transport Temperature: Frozen
Specimen Stability: Frozen: 72 hours
Rejection Criteria: Specimen received in a non-Myoglobin Transport tube; More than 4 mL urine in Myoglobin Transport tube; Specimen received room temperature; Specimen received past stability; pH <8.0; Timed urine
For additional supply or collection device information, please contact DLO's Customer Service at (800) 891-2917, option 2.
The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the Payor being billed.
CLIA