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Test ID UEBF Urea Nitrogen, Body Fluid

Useful For

Serous and drain fluids:

Detecting the presence of urine in body fluid specimens


Peritoneal dialysis fluid:

Assessing adequacy of peritoneal dialysis treatment protocols

Method Name

Photometric, Urease

Reporting Name

Bld Urea Nitrog, BF

Specimen Type

Body Fluid

Necessary Information

Indicate specimen source.

Specimen Required

Container/Tube: Sterile container

Specimen Volume: 1 mL

Collection Instructions: Centrifuge specimen to remove any cellular material.

Specimen Minimum Volume

0.25 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Body Fluid Refrigerated (preferred) 7 days
  Frozen  365 days

Day(s) and Time(s) Performed

Monday through Sunday; Continuously

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
UEBF Bld Urea Nitrog, BF In Process


Result ID Test Result Name Result LOINC Value
UE_BF Bld Urea Nitrog, BF 3093-2
FLD15 Fluid Type 14725-6

Test Classification

This test has been cleared or approved by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

NY State Approved