CREATININE AND UREA NITROGEN, 24HR URINE

Test Code

CR/UN

Alias/See Also

CRUN

CPT Codes
82570; 84540

Preferred Specimen

24 Hour Urine Container without preservative
(aliquot or transfer urine into a transfer tube and note the total volume)

Instructions

Mix the specimen well and measure the 24-Hour volume (RECORD THE TOTAL VOLUME)
Pour off 20 mL of urine into a separate plastic screw-cap container
Refrigerate if not tested immediately

Transport Temperature

Refrigerate

Specimen Stability

2-8°C up to 4 days

Methodology
Enzymatic Rate

Setup Schedule

M, T, W, Th, F, Sa, Sun

Report Available

Within 24 hours of receipt at the performing laboratory.

Performed By
Alverno Laboratories

Performing Laboratory
Alverno Central Lab
NCHB1 (Chemistry, Beckman AU)

Additional Information
24 Hour Urine Collection

Last Updated: July 5, 2023

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.