Urea Nitrogen, Urine
0020480
Ordering Recommendation
 
Mnemonic
UUN
Methodology
Quantitative Spectrophotometry
Performed
Sun-Sat
Reported
Within 24 hours  
New York DOH Approval Status
This test is New York DOH approved.
Submit With Order
Specimen Required
Patient Preparation
  
Collect
24-hour urine with no additive. Refrigerate during collection. Also acceptable: Random urine.  
Specimen Preparation
Transfer 3 mL aliquot from a well-mixed 24-hour collection to an ARUP Standard Transport Tube. (Min: 0.5 mL) Record total volume and collection time interval on transport tube and test request form.  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Urine collected with acid. Specimens stored at room temperature.  
Remarks
  
Stability
Ambient: 48 hours; Refrigerated: 1 week; Frozen: 1 month  
Reference Interval
12.0-20.0 g/d  
Interpretive Data
 
Note
Reference interval for random urine has not been established.
CPT Code(s)
84540
Components
Component Test Code*Component Chart Name
0020207Creatinine, Urine - per volume
0020208Creatinine, Urine - per 24h
0020216Urine Urea Nitrogen - mg/dL
0020217Urea Nitrogen, Urine g/day
0097110Total Volume
0097111Hours Collected
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • Urea
  • urine urea nitrogen clearance