|
|
Lab Dept:
|
Urine/Stool
|
Test Name:
|
UREA NITROGEN, RANDOM URINE
|
General Information
|
Lab Order Codes:
|
UUNR
|
Synonyms:
|
BUN, Random Urine
|
CPT Codes:
|
84540 – Urea nitrogen; urine
|
Test Includes:
|
Urea nitrogen concentration in mg/dL
|
Logistics
|
Test Indications:
|
The urea nitrogen level, along with creatinine, is used to evaluate kidney function, and used to monitor patients with kidney failure or those receiving dialysis therapy.
|
Lab Testing Sections:
|
Chemistry
|
Phone Numbers:
Minneapolis:
Saint Paul:
|
|
612-813-6280
|
651-220-6550
|
Test Availability:
|
Daily, 24 hours
|
Turnaround Time:
|
1 day
|
Special Instructions:
|
N/A
|
Specimen
|
Specimen Type:
|
Urine, random collection
|
Container:
|
Plastic leakproof container (No preservatives)
|
Draw Volume:
|
1 - 3 mL from a random urine collection
|
Processed Volume:
|
Minimum: 0.5 mL urine
|
Collection:
|
A random urine sample may be obtained by voiding into a urine cup and is often performed at the laboratory. Bring the refrigerated container to the lab. Make sure all specimens submitted to the laboratory are properly labeled with the patient’s name, medical record number and date of birth.
|
Special Processing:
|
N/A
|
Patient Preparation:
|
None
|
Sample Rejection:
|
Mislabeled or unlabeled specimens
|
Interpretive
|
Reference Range:
|
350 - 1000 mg/dL
|
Critical Values:
|
N/A
|
Limitations:
|
N/A
|
Methodology:
|
Urease/Glutamate Dehydrogenase, Enzymatic
|
References:
|
BUN Flex™ reagent cartridge insert sheet, Siemens Healthcare Diagnostics Inc, 2008-03-04 L 717021.001 - US
|
Clinical Significance, Siemens Healthcare Diagnostics Inc, Newark, Delaware 19714
|
Jacobs & DeMott Laboratory Test Handbook (2001) Lexi-Comp, Inc, Hudson, OH, 5th Edition
|
Biorad Liquichek Unassayed Chemistry Control Product Insert (10/2005) Bio-Rad Laboratories, Irvine, CA 92618
|
Biorad Liquichek Urine Chemistry Control Product Insert (6/2005) Bio-Rad Laboratories, Irvine, CA 92618
|
