Nitrogen, Total, Urine
0092140
Ordering Recommendation
Submit With Order
Mnemonic
NITRO UR
Methodology
Quantitative Dumas Combustion
Performed
Varies
Reported
4-11 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
24-hour urine.  
Specimen Preparation
Transfer 10 mL aliquot from a well-mixed 24-hour urine collection to ARUP Standard Transport Tubes. (Min: 2 mL) Do not use preservatives.  
Storage/Transport Temperature
Refrigerated. Also acceptable: Room temperature or frozen.  
Unacceptable Conditions
 
Remarks
24 hour volume required.  
Stability
Ambient: 1 week; Refrigerated: 1 week; Frozen: 3 years  
Reference Interval
By report
Interpretive Data
Note
CPT Code(s)
84999
Components
Component Test Code*Component Chart Name
0092141Nitrogen, Total, Urine
0096339Nitrogen, Total, Urine - Volume
0096340Nitrogen, Total, Urine - Duration
* 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.
Cross References
  • Nitrogen Balance
  • Total Urinary Nitrogen
Performed at Mayo