Urea Fractional Excretion, Urine
General Information
- Lab Name
- Urea Fractional Excretion, URN
- Lab Code
- FEUREA
- Epic Ordering
- Urea Fractional Excretion, URN
- Description
- Note: Blood Urea Nitrogen [BUN] and Blood Creatinine [CRE] as well as (Random or Timed) Urine Creatinine and Urine Urea Nitrogen are required to calculate the Urea Fractional Excretion. There is an additional charge for each of the blood components.
- Synonyms
- Urine Urea Nitrogen and Urine Creatinine
- Components
-
Code Name CREPU Creatinine/Unit, Urine UNPU Urea Nitrogen/Unit, URN UNFE Urea Fractional Excretion
Interpretation
- Reference Range
- See individual components
Ordering & Collection
- Specimen Type
- Urine
- Collection
-
Urine plus Blood Urea Nitrogen and Creatinine collected within 24 hours of the urine.
- Handling Instructions
- Urine : No preservative required, refrigeration preferred.
- Quantity
-
requested: 10 mL urine + 0.5 mL serum/plasma
minimum: 1 mL urine + 0.2 mL serum/plasma
Processing
- Processing
- Note: Be sure there is a Blood Creatinine and Blood Urea Nitrogen ordered within time noted above.
Performance
- LIS Dept Code
- Chemistry, Automated Panels (CHA)
- Performing Location(s)
-
HMC Chemistry, Automated
206-520-4600325 9th Ave, Rm # GWH-47, Seattle, WA 98104-2420
UW-MT Chemistry, Automated
206-520-4600Clinical Lab, Room NW220,
University of Washington Medical Center,
1959 NE Pacific street, Seattle, WA 98195 - Frequency
- Daily
- Available STAT?
- Yes
Billing & Coding
- CPT codes
- 84540
- LOINC
- 59009-1