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HelpTest Code 24NA Sodium, Urine, 24 hours
Specimen Requirements
Specimen Type: 24 hours Urine
Container/Tube: The following types of 24hr urine containers are acceptable:
- No preservatives,
- 3g Thymol
Volume: 4000mL
Minimum Volume: 20mL
Collection Instructions: Collect urine in 24-hour urine container with a suitable preservative (available at Laboratory).
Please refer to NUH's Urine Preservative Guide
Sample Stability
** Preferred temperatures for storage prior to and during shipping to NUH **
| Specimen Type: | 24 hours urine |
|---|---|
| Ambient: | 45 days |
| Refrigerate: | 45 days |
| Frozen: | 1 year |
Reference Interval
| Age | Male | Female |
|---|---|---|
| 6 - 9 yrs | 41-115 mmol/day | 20-69 mmol/day |
| 10 - 13 yrs | 63-177 mmol/day | 48-168 mmol/day |
| ≥18 yrs | 40-220 mmol/day | 27-287 mmol/day |
Days and Times Performed
24 hours, TAT 1 day
Methodology
Ion-selective electrode diluted (Indirect)
Service Code
31142
Update
Last updated 10/06/2024
Updated on Specimen requirements container/tube
Unacceptable Condition
| Haemolysis | NA |
|---|---|
| Icterus | NA |
| Lipaemic | NA |
| Others | NA |
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Assessment of electrolyte balance
Alias
24NA