Myoglobin, Urine

Message
Take to Processing immediately after collection. Specimen needs transferred to special preservative tube within one hour.
*Collect specimen Monday through Friday only before 1500 EST. Do not collect the day before a holiday.

Add exactly 4 mL random urine to a Myoglobin transport tube within one hour of collection. FREEZE AND SHIP FROZEN.


Test Code
661


Alias/See Also
LAB412
MYG UR


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. Freeze and ship frozen.
Transport tube, product #177447, is available through Client Supply.

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
Myoglobin transport tube


Transport Temperature
Frozen


Specimen Stability
Room temperature: Unacceptable
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

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
10: 00 a. M. Mon-sat


Report Available
1-2 days


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.


Performing Laboratory
Quest Diagnostics Nichols Institute
27027 Tourney Road
Valencia, CA 91355-5386




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.