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HelpTest Code 24CCT Creatinine Clearance Test, 24 hr
Additional Codes
| Epic Ordering Code | LAB818 |
| NBS code | LBC04212 |
| Service code | 31150 |
Specimen Requirements
Submit the following:
| Blood (Preferred) | Blood (acceptable) | Urine |
| Yellow Top | Light Green Top | 24hr Urine Container |
Preservative types accepted: No preservative, Thymol
Processing Requirements
Blood
Allow specimen to clot for 30 mins (Yellow Top) and centrifuge within 2 hours
Specimen type: Serum/Plasma
Volume: 0.5mL
Urine
Specimen type: 24hr Urine
Volume: Cumulative urine collection over 24 hours
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 7 days |
| Refrigerate | 7 days |
| Frozen | 3 months |
| Specimen Type | 24 hr urine |
|---|---|
| Ambient | 2 days |
| Refrigerate | 6 days |
| Frozen | 6 months |
Specimen Condition
| Haemolysis | Not applicable |
|---|---|
| Icterus | Not applicable |
| Lipaemia | Not applicable |
| Others | Not applicable |
Methodology
Enzymatic Assay
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
Creatinine, urine, 24 hrs
| Male | 7.7 – 21.3 mmol/day |
|---|---|
| Female | 5.9 – 14.1 mmol/day |
Creatinine clearance (CCT):
Normal > 70 mL/min in a young adult. Typically falling approximately 0.5 mL/min per year at ages over 30 years.
Reference: RCPA Manual
(https://www.rcpa.edu.au/Manuals/RCPA-Manual/Pathology-Tests/C/Creatinine-clearance)
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Evaluation of renal disease.
Estimation of glomerular filtration rate.
Update
Last updated 31/07/2026
LOINC Code Information
| Urine volume, total | 3167-4 |
|---|---|
| Creatinine, urine | 14683-7 |
| Creatinine, urine, 24 hr | 14684-5 |
| Creatinine clearance | 2164-2 |
Panel Information
Panel includes the following tests:
- Creatinine
- Creatinine, urine
- Urine Volume, total
- Time