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HelpTest Code 24MG Magnesium, Urine, 24 hours
Specimen Requirements
Specimen Type: 24 hours Urine
Container/Tube: The following types of 24hr urine containers are acceptable:
- No preservatives, or
- 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: | 2 days |
| Refrigerate: | 2 days |
| Frozen: | 1 year |
Reference Interval
3.0-5.0 mmol/day
Days and Times Performed
24 hours, TAT 1 day
Methodology
Enzymatic
Service Code
31306
Update
Last updated 18/04/2023
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 the cause of abnormal serum magnesium concentrations.
Alias
24MG