UREA NITROGEN, 24 HOUR URINE

Synonyms:
Computer Code: (24UUN)
Specimen Collection: 24 hour urine in plain bottle. Refrigerate during collection.
Minimum Volume: 1.0 mL
Handling Instructions for Offsite Areas: Record total volume and collection period (hours) on requisition. Send 50 mL aliquot. Refrigerate.
Reference Values: 10-20 GM/24 hr (diet dependent)
Lab Code: Chemistry
Requisition: URINE
Test Frequency: Daily
Routine TAT: 4 hrs
Stat TAT: 2 hrs
CPT Code(s): 84540
LCD or NCD:
Methodology Used:
See Addendum XVII