Myoglobin, Urine : 1001826

Test Code
MYOGU or 1001826

CPT Codes
83874

Instructions
Random or 24-hour urine. Refrigerate during collection.

Transport Container
Laboratory notes: Mix well and adjust pH to 8-9 by adding 10 percent Na2CO3 drop-wise to the random urine or 5 grams Na2CO3 to the entire 24-hour collection immediately after collection. (Myoglobin is unstable in urine, unless the pH is 8.0-9.0) Transfer 1 mL aliquot from a well-mixed random or 24-hour collection to a standard transport tube. (Min: 0.5 mL) (Available from Client Services supply #R10001 for Random urine or supply #R10002 for 24 hour urine.)

Please see Links in Additional Information for Preservative Instructions.
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Transport Temperature
Refrigerated.

Specimen Stability
pH 8-9: Ambient: 1 hour; Refrigerated: 72 hours; Frozen: 1 month

Methodology
Electrochemiluminescent Immunoassay

Setup Schedule
Sunday - Saturday

Report Available
Within 24 hours (From receipt at performing laboratory)

Reference Range
0-1 mg/L

Clinical Significance
Patients with urine myoglobin greater than 15 mg/L are at risk of acute renal failure. Usual results are less than 1 mg/L. Results between 1 and 15 mg/L are associated with vigorous exercise, myocardial infarct, mild muscle injury, and other conditions.

Performing Laboratory
ARUP Laboratories

Additional Information
Myoglobin, Random Urine Preservative Instructions
Myoglobin, 24 hour Urine Preservative Instructions
Sodium carbonate MSDS Information


The CPT Codes provided in this document 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. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.