Home
HelpTest Code 24CAU Calcium, urine, 24 hr
Additional Codes
| Epic Ordering Code | LAB814 |
| NBS code | LBC03976 |
| Service code | 31401 |
Specimen Requirements
Submit the following:
| Container: |
| 24 Hr Urine Container |
Preservative types accepted: No preservative, Thymol
Processing Requirements
Specimen type: 24hr Urine
Volume: Full 24hr urine collection
Specimen Stability
| Specimen Type | 24 hr urine |
|---|---|
| Ambient | 2 days |
| Refrigerate | 4 days |
| Frozen | 3 weeks |
Specimen Condition
| Haemolysis | Not applicable |
|---|---|
| Icterus | Not applicable |
| Lipaemia | Not applicable |
| Others | Not applicable |
Methodology
Colorimetry
Days and Times Performed
24 hrs, TAT 1 day
Reference Interval
| Calcium-free diet | 0.1 to 1.0 mmol/day |
|---|---|
| Low to average | 1.3 to 3.8 mmol/day |
| Average (800 mg/day or 20 mmol/day) | 2.5 to 7.5 mmol/day |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Evaluation of calcium metabolism
Update
Last updated 31/07/2026
LOINC Code Information
| Urine volume, total | 3167-4 |
|---|---|
| Calcium, urine | 2004-0 |
| Calcium, urine, 24 hr | 14637-3 |