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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Nitrogen, Total, Urine


Test Description: Link:

Testing Site: Testing will be sent to an approved reference laboratory.

Specimen Requirements

Collection Instructions: 24-hour collection only.  No preservative necessary. For timed urine collections, collect all urine in container provided.  Add "Refrigerate" sticker to 24-hour container.

Specimen Transport: After specimen collection is completed, transport entire specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack. If transport is delayed, keep specimen refrigerated.

Outreach Specimen Transport: Mix urine well and note volume and period. Transport 50 mL aliquot on a coolant pack to UWHC Core Laboratory (B4/220) along with volume and period information.


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