Specimen Requirements

Title

UREA NITROGEN, URINE 24HR

Specimen Requirement

24 hour urine collection preferred.  Refrigerate during collection. Record total volume on aliquot of urine and lab order.

Random urine is also acceptable; submitted in sterile screw-capped container.

Methodology

Stability

7 days refrigerated

Reference Range

By Report

Turnaround

24 hours

Clinical Use

Renal function test; coarse nitrogen-wasting test on patients on hyperalimentation; indicate nitrogen balance in hyperalimentation; rule out tap of urinary bladder in amniocentesis, paracentesis

Test Code

UUNM