Test Definition: NITUNitrogen, Total, Urine

Reporting Title: Nitrogen, Total, UPerforming Location: Rochester

Specimen Requirements:Container/Tube: Plastic, 10-mL urine tube (Supply T068)Specimen Volume: 10 mLCollection Instructions:1. Collect urine for 24 hours.2. No preservative.Additional Information:1. 24-Hour volume is required.2. See Urine Preservatives in Special Instructions for multiple collections.Forms: If not ordering electronically, submit a General Request Form (Supply T239) with the specimen.Urine Preservative Collection OptionsAmbientYesRefrigeratedYesFrozenPreferred6N HClYes50% Acetic AcidYesNa2CO3YesTolueneYes6N HNO3NoBoric AcidNoThymolYes

Specimen Type Temperature Time

Urine Refrigerated (preferred) 7 daysAmbient 7 days

Frozen

Ask at Order Entry (AOE) Questions:

Test ID Question ID Description Type Reportable

NITU DUR8 Collection Duration Plain Text Yes

NITU TOTV Specimen Volume Plain Text Yes

Document generated March 10, 2014 at 6:00pm CDT Page 1 of 2

Test Definition: NITUNitrogen, Total, Urine

Result Codes:

Result ID Reporting Name Type Unit LOINC

17418 Nitrogen, Total, U Numeric g/24 h 2660-9

DUR8 Collection Duration Alphanumeric 13362-9

TOTV Specimen Volume Alphanumeric 28009-9

CPT Code: 1 84999

Reference Values:

or =16 years: 4-20 g/24 hours

Document generated March 10, 2014 at 6:00pm CDT Page 2 of 2