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HelpTest Code 24PO4 Phosphate, urine, 24 hr
Laboratory Code
LAB426
Specimen Requirements
Specimen Type: 24 hr urine
Container/Tube: The following types of 24 hr urine containers are acceptable:
- No preservatives
- 3.0 g Thymol
Volume: 4000.0 mL
Minimum Volume: 20.0 mL
Collection Instructions: Collect urine in 24 hr urine container with a suitable preservative (available at laboratory).
Please refer to NUH's Urine Preservative Guide
Specimen Stability
| Specimen Type | 24 hr urine |
|---|---|
| Ambient | 2 days |
| Refrigerate | Not available |
| Frozen | Not available |
Methodology
Colorimetry
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Haemolysis | Not applicable |
|---|---|
| Icterus | Not applicable |
| Lipaemia | Not applicable |
| Others: Refrigerated or frozen | Reject |
Reference Interval
12.9 – 42.0 mmol/day
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Assessment of calcium and phosphate disorders.
Service Code
31402
LOINC Code Information
| Urine volume, total | 3167-4 |
|---|---|
| Phosphate, urine | 13539-2 |
| Phosphate, urine, 24 hr | 25973-9 |
Alias
24PO4
Update
Last updated 12/03/2025