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HelpTest Code LAB19 Renal Function Panel
Useful For
Detecting conditions affecting kidney function
Profile Information
| Test Code | Test Name | Methodology |
Available Separately |
|---|---|---|---|
| LAB140 | Blood Urea Nitrogen (BUN) | Urease GLDH | Yes |
| LAB383 | Creatinine | Kinetic Colorimetric (Jaffe) | Yes |
| Estimated glomerular filtration rate (eGFR)* | Calculation | ||
| LAB53 | Calcium | Photometric, 5-nitro-5'-methyl-BAPTA | Yes |
| LAB59 | Chloride | Ion-Selective Electrode (ISE) | Yes |
| LAB55 | Carbon Dioxide (CO2) | Enzymatic (Bicarbonate PEPC) | Yes |
| LAB122 | Sodium |
Ion-Selective Electrode (ISE) |
Yes |
| LAB144 | Potassium |
Ion-Selective Electrode (ISE) |
Yes |
| N/A | Anion Gap | Calculation | No |
| LAB82 | Glucose | Enzymatic reference method with hexokinase | Yes |
| LAB45 | Albumin | Colorimetric/bromocresol green | Yes |
| LAB113 | Phosphorous | Molybdate UV | Yes |
* for all patients 18 years and older
Performing Laboratory
Bozeman Health Laboratory Services
Specimen Requirements
Specimen Type: Plasma or serum
Container/Tube: Light-green top (lithium heparin gel), red top, or gold top
Specimen Volume: 1 mL
Specimen Minimum Volume: 0.5 mL
Collection Instructions:
- Do not uncap tube once specimen is drawn.
- Centrifuge within 2 hours of collection.
Specimen Rejection: Samples with marked hemolysis or lipemia will be rejected.
Specimen Transport Temperature
Ambient<40 hours/Refrigerated>40 hours
Specimen Stability
| Specimen Type | Temperature | Time |
|---|---|---|
| Plasma or Serum (capped for CO2) | Ambient | 8 hours |
| Refrigerated | 3 days | |
| Frozen | 1 month |
Reference Values
See individual test listings
Anion Gap: 5-18 meq/L
BUN/Creatinine Ratio: 12.0-20.0
An increased ratio may be due to a condition that causes a decrease in the flow of blood to the kidneys, such as congestive heart failure or dehydration. It may also be seen with increased protein, from gastrointestinal bleeding, or increased protein in the diet. The ratio may be decreased with liver disease (due to decrease in the formation of urea) and malutrition.
For patients with a GFR < 45, a referral to Nephrology is recommended.
Day(s) Test Set Up
Monday through Sunday
Test Classification and CPT Coding
80069