Ordering Recommendation
Mnemonic
UNCL
Methodology

Quantitative Spectrophotometry

Performed

Sun-Sat

Reported

Within 24 hours

New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect

24-hour urine (refrigerate during collection). AND Plasma Separator Tube (PST) or Serum Separator Tube (SST), collected within 48 hours of initiating urine collection.

Specimen Preparation

Transfer one 3 mL aliquot of urine from a well-mixed 24-hour collection to an ARUP Standard Transport Tube. (Min: 0.5 mL) AND transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.2 mL)

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions

Random urine collections.

Remarks

Record total volume and collection time interval on transport tube and test request form.

Stability

Ambient: 48 hours; Refrigerated: 5 days; Frozen: 1 month

Reference Interval

Effective July 18, 2011

64-99 mL/min

Interpretive Data



Compliance Category

FDA

Note
Hotline History
N/A
CPT Codes

84545

Components
Component Test Code* Component Chart Name LOINC
0020216 Urine Urea Nitrogen - mg/dL 12967-6
0097110 Total Volume 19153-6
0097111 Hours Collected 30211-7
2005208 Urea Clearance 51735-9
2005209 Urea, Serum 3094-0
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • renal urea clearance
  • Urea clearance, Urine
  • urea excretion
  • Urea Nitrogen Clearance
Urea Clearance