Myoglobin, Urine

Message

Limited stability- contact QNI with limited stability tracking information via phone and email.

Test Code

MYOGRU

Quest Code

661

CPT Codes
83874

Preferred Specimen

4 mL random urine submitted in a myoglobin transport tube

Patient Preparation
Collection Sunday-Thursday to arrive at QNI labs Monday-Friday ONLY

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.

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

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.

Performing Laboratory
Quest Diagnostics Valencia 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.