UREA NITROGEN RANDOM URINE

Test Code

UBUNR

Alias/See Also

UUREAR

CPT Codes
84540

Preferred Specimen

Random urine specimens, use no preservatives. Refrigerate specimen during collection.

Minimum Volume

1.0 mL

Specimen Stability

Room Temperature: Urine 2 days at 15-25°C
Refrigerated: Urine 7 days at 2-8°C
Frozen: Urine 1 months at -20°C

Methodology
Kinetic

Setup Schedule

Mon-Sun

Report Available

Same day

Reference Range

None established.

Clinical Significance

About 80% of urinary nitrogen is in the form of urea which is the major end product of protein metabolism. Urea excreted in the urine is the primary method of nitrogen elimination. Conditions associated with increased urine urea nitrogen are hyperthyroidism, high protein diets and post-operative states. Decreased levels are associated with convalescence, liver disease, toxemia and advanced renal disease.

Performing Laboratory
Frederick Health Laboratory 400 W 7th St. Frederick, MD. 21701

Last Updated: December 28, 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.