Blood Urea Nitrogen (BUN)
Viruses Included in Panel
Organisms Included in Panel
Test Utility
A quantitative determination of urea nitrogen from human serum that is used for the diagnosis of certain renal and metabolic conditions.
Urine Drug Screen Profile Includes:
Methodology
Based on an enzymatic reaction where urea is hydrolyzed by urease yielding ammonia and carbon dioxide. The reaction results in reducing two molecules of NADH to NAD+, which is directly proportional to the amount of BUN present in the initial sample.
Methodology
Screen Test Name | Assay Type |
---|---|
ETG
| DRI |
Amphetamine
| DRI |
Barbiturates
| DRI |
Benzodiazepine
| DRI |
Cotinine
| DRI
|
Cocaine
| DRI |
Methadone
| DRI |
Opiate
| DRI |
Oxycodone
| DRI |
THC
| DRI |
Fentanyl
| DRI |
Buprenorphine | CEDIA
|
PCP
| DRI |
Individual Test Information Including Methodology & Reference Ranges
Reflex to UTI Criteria
Specimen Collection and Preparation
Serum or plasma sample in the following tubes:
Preferred Specimen: One Gold-top OR red top SST tube. (Minimum Whole Blood: 4.0 mL)
Also acceptable: One Lithium OR Sodium Heparin tube OR one Lavender-top EDTA tube. (Minimum Whole Blood: 3.0 mL)
Specimen Storage and Stability
If analysis is delayed, the sample should be refrigerated or frozen.
Specimen Stability:
Room Temperature (15–25°C): 24 hours
Refrigerated (2–8°C): 7 days
Frozen (-20°C or below): 60 days
Specimen Rejection
Insufficient sample volume
Sample not stored at proper temperature
Frozen whole blood
Hemolyzed samples
Severely lipemic specimens
Specimen labeled incorrectly or not labeled
Reference Range (Cutoff)
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
Cocaine | 300 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
Benzodiazepine | 200 |
Screen Test Name | Cutoff (ng/mL) |
---|---|
Buprenorphine | 5 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
Amphetamine | 500 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
Barbiturates | 200 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
ETG | 500 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
ETG | 500 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
EDDP | 100 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
Fentanyl | 1 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
Methadone | 300 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
PCP | 25 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
Opiate | 300 |
Screen Test Name | Screen Test Name Cutoff (ng/mL) |
---|---|
Oxycodone | 300 |
Screen Test Name | Cutoff (ng/mL) |
---|---|
Methamphetamine | 500 |
Screen Test Name | Cutoff (ng/mL) |
---|---|
THC | 50 |
Screen Test Name | Cutoff (ng/mL) |
---|---|
ETG | 500 |
Amphetamine | 500 |
Barbiturates | 200 |
Benzodiazepine | 200 |
Cotinine | 500 |
Cocaine | 300 |
Methadone | 300 |
Opiate | 300 |
Oxycodone | 300 |
THC | 50 |
Fentanyl | 1 |
Buprenorphine | 5 |
PCP | 25 |
Reference Range
Adults: 7 – 25 mg/dL
*Reference ranges provided for informational purposes only. See patient report for test interpretation.
Parameter | Reference Range |
---|---|
Glucose | Negative |
Bilirubin | Negative |
Ketones | Negative |
Specific Gravity | 1.005 - 1.030 |
Blood | Negative |
pH | 5.0 - 8.0 |
Protein | Negative |
Urobilinogen | 0.0 - 1.0 mg/dL |
Nitrate | Negative |
Leukocyte Esterase | Negative |
Microscopic Evaluation | |
WBC | Negative |
RBC | Negative |
Hylaine Casts | Negative |
All other Parameters | Negative |
Parameter | Reference Range |
---|---|
Microscopic Evaluation | |
WBC | Negative |
RBC | Negative |
Hylaine Casts | Negative |
All other Parameters | Negative |
Parameter | Reference Range |
---|---|
Glucose | Negative |
Bilirubin | Negative |
Ketones | Negative |
Specific Gravity | 1.005 - 1.030 |
Blood | Negative |
pH | 5.0 - 8.0 |
Protein | Negative |
Urobilinogen | 0.0 - 1.0 mg/dL |
Nitrate | Negative |
Leukocyte Esterase | Negative |
CBC | Adult Male | Adult Female | Adult Female 10^3/uL | Adult Female % |
---|---|---|---|---|
WBC
| 3.5-10.5 10³/uL | 3.5-10.5 10³/uL | ||
RBC
| 4.32-5.72 10⁶/uL | 3.9-5.03 10⁶/uL | ||
HGB | 13.5-17.5 g/dL | 12.0-15.5 g/dL | ||
HCT | 38.8-50.0% | 34.9-44.5% | ||
MCV | 81.2-95.1 fL | 81.6-98.3fL | ||
MCH | 27-35 pg | 27-35 pg | ||
MCHC | 31-36 g/dL
| 31-36 g/dL
| ||
RDW | 11.8-15.6% | 11.9-15.5%
| ||
PLT | 150-450 10³/uL | 150-450 10³/uL
| ||
Differential | Adult Male 10³/uL | Adult Male %
| ||
Neutrophils | 1.7-7.0 | 55-70
| 1.7-7.0
| 55-70 |
Lymphocytes | 0.9-2.9 | 20-40
| 0.9-2.9
| 20-40 |
Monocytes | 0.3-0.9 | 2-8
| 0.3-0.9
| 2-8 |
Eosinophils | 0.0-0.5 | 1-4
| 0.0-0.5
| 1-4 |
Basophils | 0.0-0.3 | 0.5-1
| 0-0.3
| 0.5-1 |
Immature Granulocytes | 0-0.5 | <1.0
| 0-0.5 | <1.0 |
CBC | Adult Male | Adult Female |
---|---|---|
WBC | 3.5-10.5 10³/uL | 3.5-10.5 10³/uL |
RBC | 4.32-5.72 10⁶/uL | 3.9-5.03 10⁶/uL |
HGB | 13.5-17.5 g/dL | 12.0-15.5 g/dL |
HCT | 38.8-50.0 % | 34.9-44.5% |
MCV | 81.2-95.1 fL | 81.6-98.3 fL |
MCH | 27-35 pg | 27-35 pg |
MCHC | 31-36 g/dL | 31-36 g/dL |
RDW | 11.8-15.6 % | 11.9-15.5% |
PLT | 150-450 10³/uL | 150-450 10³/uL |
Test | Adult Male | Adult Female |
---|---|---|
ESR | 0-10 mm/hr | 0-20 mm/hr |
CBC | Adult Male | Adult Female |
---|---|---|
HGB | 13.5-17.5 g/dL | 12.0-15.5 g/dL |
HCT | 38.8-50.0% | 34.9-44.5% |
Test | Adult Male | Adult Female |
---|---|---|
Reticulocyte Count | 0.0216 – 0.0858 10^6/uL | 0.0195 – 0.0755 10^6/uL |
Testing Description
State Reportable Infection
Pediatric Range
Click below to view the Pediatric Range for the following test.
Test Code
BUN
Performed
Monday – Saturday
Result available within 24 hours of receipt in laboratory
NOTE: Specimens are refrigerated (2-8°) for 7 days before disposal
STAT results available within 2 hours of receipt in the laboratory
Contacts
Vibra Health Laboratory
1307- A, Allen Dr
Troy, MI 48083
(248) 846-0663
Last Updated
4/26/23 v.1