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HelpTest Code UCRCL Creatinine Clearance
Performing Laboratory
Hunterdon Medical Center Laboratory
Special Instructions
Note:
1. Blood specimen must be collected within 48 hours of the urine collection.
2. Submit an entire 24 hour urine collection in plastic urine container.
3. Refrigerate urine specimen during collection.
4. Starting and ending times of collection are required on urine container for processing.
Specimen Required
Test updated May 2016
| Container/Tube | |
| Preferred | PST (Li Hep) Gel- Mint Green Top |
| Acceptable | SST |
| Specimen Volume | 3.0mL |
| Minimum Volume | 1.0mL |
| Container/Tube | Plastic 24 hour urine container |
| Preservative-Preferred | None |
| Preservative -Acceptable | 5mL 10% HCl, 5mL 30%HCl, or Boric Acid |
Specimen Type
Plasma preferred.
Serum acceptable.
Urine, 24 hour
Specimen Transport Temperature
Ambient
Specimen Stability
| Specimen | Temperature | Time Frame |
| Serum | Ambient 15-25°C | 7 days |
| Refrigerated 2-8°C | 7 days | |
| Urine | Ambient 15-25°C | 2 days |
| Refrigerated 2-8°C | 6 days |
Day(s) Test Set up
Monday through Sunday
Reference Values
| Test | Female | Male | Units |
| Creatinine, Urine | 28.0-271.0 | 39.0-259.0 | mg/dL |
| Creatinine Clearance/24 hours | 71.0-151.0 | 71.0-151.0 | mL/min |
Methodology
Kinetic colorimetric assay.
CPT Code
82575-creatinine
81050-urine timed measurement
Loinc Code
Creatinine- 14682-9
Urine Creatinine-2161-8