Test Overview
Test Methodology

Rate (Urease)

Test Usage

Renal function test

Reference Range *

10 - 15 g/24 hrs (167-250 mMol/24 hrs). Random urine collections are reported in units of mg/dL, for which reference values are not established.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Daily
Analytic Time

8 hours

Soft Order Code
UREAU
MiChart Code
Urea Nitrogen, Random Urine
Synonyms
  • Urea, Urine
  • UREAU
  • UUN
  • Urea, Urine
  • UREAU
  • UUN
  • UREA NITROGEN URINE RANDOM
  • UREA NITROGEN URINE 24 HOUR
  • UREAQ
Laboratory
Chemical Pathology
Section
Automation
Specimen Requirements
Collection Instructions

Collect 24 hour urine specimen with no preservative. Aliquot 10 ml into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine also acceptable.

Alternate Specimen
Specimens collected with glacial acetic acid, HCl, or boric acid preservative are acceptable. If collected in container with acid preservative, indicate on container and requisition: "Collected in Acid".
Rejection Criteria
Diapers, sections of diapers, swabs or any other absorbent material will not be accepted as a collection container for urine.
Normal Volume
5 mL aliquot of 24 hour urine collection or 2 mL aliquot of random urine collection.
Minimum Volume
2 mL aliquot of 24 hour urine collection or 1 mL aliquot of random urine collection.
Billing
CPT Code
84540
Fee Code
20312
LOINC
UREAU 3095-7 UREAQ 3096-5
Resources