Additional Information:
Serum free from hemolysis is the recommended specimen.
UFHPL Epic order code: LAB140
CPT Code(s):
84520
Specimen Requirements:
Type: Serum or plasma
Container/Tube: Serum gel or heparinized plasma
Sample Volume: Submit the full tube.
Minimum Volume: 0.5 mL serum or plasma
Preparation:
- Send specimens in their original tubes.
- Centrifuge the tube if there is a delay in transport of more than 1 hour.
Storage:
- Samples are stable for up to 1 day at 15 – 25°C.
- Samples are stable for up to 3 days at 2 – 8ºC.
Unacceptable Conditions: Samples with moderate or marked hemolysis will be rejected.
Specimen Retention Time: 5 days
Use:
Measurements of urea nitrogen are used in the diagnosis and treatment of certain renal and metabolic disorders. Blood urea nitrogen (BUN) levels are a measure of kidney function and also of pre- and post-renal conditions.
Methodology:
Urease, UV
Reported:
Within 24 hours
Reference Values:
7-25 mg/dL