Test Code LAB140 Blood Urea Nitrogen
Performing Lab
Arnot Ogden Medical Center/ Ira Davenport Memorial Hospital
Ordering Recommendations
The determination of serum blood urea nitrogen currently is the most widely used screening test for the evaluation of kidney function. The test is frequently requested along with the serum creatinine test since simultaneous determination of these 2 compounds appears to aid in the differential diagnosis of prerenal, renal and postrenal hyperuremia.
Included in BMP, CMP & Renal Panel.
Collect
Serum or Plasma
Collection Device
Lithium Heparin Green Top Tube or Gold Top Tube
Specimen Volume
5 mL
Stability (from collection to initiation)
Room Temp |
1 day |
Refrigerated | 3 days |
Frozen | 2 months |
Storage/Transport Temperature
Refrigerated or Frozen
Minimum Requirements
1 mL
Methodology
Enzymatic Conductivity Rate
Start Date
9/13/2017
Last Review Date
06/20/2025
Specimen Handling
Centrifuge within 2 hours of collection.
Remarks
TURN AROUND TIME
STAT |
1 Hour |
Routine |
8 Hours |