Home
HelpTest Code CCL Creatinine Clearance
Performing Laboratory
| Memorial Hospital Laboratory- Automated Procedures | 304-388-5953 |
| Teays Valley Hospital Laboratory | 304-757-1770 |
Specimen Requirements
Plasma- Mint Green, Dark Green Lithium Heparin or Serum- SST gold top, red top
Allow SST or red top to completely clot
Spin and physically separate plasma/serum from contact with cells as soon as possible
4 mL of plasma/serum/whole blood (minimum 2 mL)
Urine-24 Hour Urine Collection Container
Preferred specimen- Entire 24-hour urine collection in a urine container without preservative
Acceptable specimen-Entire 24-hour urine collection in a urine container with 6NHCL or boric acid
Refrigerate specimen during collection and send specimen on ice.
Start and end times of collection are required on request form for processing.
Specimen Rejection
- Improperly labeled, collected, stored, and transported
Storage and Stability
Urine
| Room temperature 20-25oC | 2 days |
| Refrigerated 4-8oC | 6 days |
Serum
| Refrigerated 2-8oC | 7 days |
| Frozen <-20oC | Indefinitley |
Reference Values
70-130 mL/min/1.73m2
For each decade after 40 yrs, creatinine clearance decreases 6-7 mL/min/1.73m2 Impairment: mL/min/1.73m2 Borderline: 62.5-80 Slight: 52-63 Mild: 42-52 Moderate: 28-42 Marked: <28
See individual test for urine and serum/plasma creatinine reference values.
Methodology
See individual test
Days Test Set Up and Turnaround
Monday through Sunday, Continuously
| AM Collection | Expected by 9AM same day |
| Routine | Expected within 24 hrs |
| Stat | Expected within 1 hr |
| Timed | Expected results are test dependant |
CPT Coding
82575