Urea Nitrogen (24 HR Urine)
Test Summary
About 80% of urinary nitrogen is in the form of urea which is the major end product of protein metabolism. Urea excreted in the urine is the primary method of nitrogen elimination; therefore, this test provides an approximate evaluation of nitrogen balance. Conditions associated with increased urine urea nitrogen are hyperthyroidism, high protein diets and post-operative states. Decreased levels are associated with convalescence, liver disease, toxemia and advanced renal disease.
Aliases
- BUN (24 hr. Urine)
- Urea Nit Ur
Specimen Collection
Special Instructions
N/A
Preferred Specimen
24 hour urine specimen. No preservative necessary
Minimum Volume
10 mL
Instructions
Transport 24 hour urine container in sealed plastic bag
Patient Preparation
N/A
Storage
24-HR. Urine Collection Container
Transport Temperature
Refrigerated
Specimen Stability
- Room Temperature = 2 days
- Refrigerated = 7 days
- Frozen = 1 month
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Incorrect specimen type, insufficient sample volume, improper storage conditions, exceeds specimen stability guidelines, contaminated sample.
Order Code
24UUN
EPIC (Premier) Code
LAB402
Includes
N/A
CPT Code
- 84540
Billing Code
- 300406
- 500002
CPT Statement
Methodology
Spectrophotometry (SP)
FDA Status
FDA Approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine OH, 45439
2308 Sandridge Drive
Moraine OH, 45439
Department
Chemistry
Reference Range
12 - 20 gm/24hr
Setup Schedule / Expected Turnaround Time
Daily; Report available: Daily
Specimen Collection
Special Instructions
N/A
Preferred Specimen
24 hour urine specimen. No preservative necessary
Minimum Volume
10 mL
Instructions
Transport 24 hour urine container in sealed plastic bag
Patient Preparation
N/A
Storage
24-HR. Urine Collection Container
Transport Temperature
Refrigerated
Specimen Stability
- Room Temperature = 2 days
- Refrigerated = 7 days
- Frozen = 1 month
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Incorrect specimen type, insufficient sample volume, improper storage conditions, exceeds specimen stability guidelines, contaminated sample.
Result Information
Methodology
Spectrophotometry (SP)
Testing Laboratory
N/A
Reference Range
12 - 20 gm/24hr
Setup Schedule / Expected Turnaround Time
Daily; Report available: Daily