Nitrogen, Total, Urine


Sunquest Code:NITROU  
Epic Code:LAB6311Epic Name:Nitrogen, Total, Urine
Methodology:Dumas combustion
CPT Code:84999
Turnaround Time:Specimens are sent to reference laboratory Mon-Fri; results are reported within 1-5 days.
Compliance:

This test was developed and its performance characteristics determined by Laboratory Medicine and Pathology, Mayo Clinic. This test has not been cleared by the U.S. Food and Drug Administration.

Associated Links:

Urine Collection Procedure



Collection Instructions

Specimen:Urine, 24 hour collection
Optimal Volume:Submit entire 24 hour collection; analysis requires 2 mL.
Collection Instructions:Refrigerate during collection.


Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 10 mL, 2 mL minimum, into two transport tubes. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Lab Sendouts  (Mayo)
Referral Lab number:NITU


Interpretive

Reference Range:16 years of age and older: 4-20 g/24hours. A reference range for patients under 16 years of age has not been established by the reference laboratory.
Use:Measure of protein catabolism; monitor total parenteral nutrition.


Click HERE to Report test errors or omissions.
*If no email program is associated with this computer, please contact:
systemlabguide@fairview.org for TestID: 1117"