University of Iowa
Diagnostic Laboratories
(UIDL) Test Directory

319-384-7212 (local)
1-866-844-2522 (toll free)


Urea Nitrogen, Quantitation
Order Code: UUN
Order Form: Laboratory Requisition
Specimen:
Urine
Collection Medium:
Urine - 24 hour/timed plastic urine container
Alternate
Collection Media:
Call laboratory for additional acceptable specimen collection 
containers.
Minimum:
24 hr collection; no preservative
Testing
Schedule:
24 hrs/day, 7 days a week, including holidays.
Analytic Time:
3 hours (upon receipt in laboratory)
Reference Range:
6-17 g/24 hr
Methodology:
Enzymatic
Sample
Processing:
Submit in leakproof container.
Sample
Storage:
Room temperature or refrigerate if stored overnight.
Transport
Instructions:
Place requisition in bag, seal bag, and tape securely to (urine) 
container.
Ship ambient or refrigerate.
Instructions:
Record date and time of 24 hour collection on requisition.  No 
preservative.  Send entire collection.
CPT Code:
84520
 
See Additional Information:
Urine Collection, 24 Hour
Urine Tests Requiring no Preservatives

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Updated: 06/23/2006