A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

Nitrogen 24 HR Urine

Test Code
LAB449


Alias/See Also
1231100018


CPT Codes
84540

Includes
URINE DURATION
URINE VOLUME (QUEST PTA) IN ML
UREA UR
UREA NITROGEN URINE
UREA NITROGEN 24 HOUR URINE
UREA 24 HR URINE


Preferred Specimen
24 Hour Urine Cointainer


Minimum Volume
All urine produced during that time frame.


Specimen Stability
Room Temperature: 2 hours
Refrigerated: 2 weeks


Methodology
Abbott Alinity

Reference Range
Males/Females
12-20 g/24 Hr


Performing Laboratory
LITTLE ROCK LABORATORY


Last Updated: August 26, 2026


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.