Test Information:
Renal urine magnesium testing is used in assessing the cause of abnormal serum magnesium concentration. It is also aids in determining whether nutritional magnesium. It may also help on assessing risk to kidney stones.
Specimen Container:
24 Hour Urine Container (with Preservative)
Specimen Type:
24 Hour Urine
Required Volume:
10mL
Patient Preparation:
• At the start of the collection, empty your bladder and discard the first urine.
• Collect all urine passed over the next 24 hours.
• Record the start and end date and time of the collection.
• Keep the urine container refrigerated or stored in an ice chest throughout the collection period.
Notes:
- Collect urine specimen with 10 mL distilled water and 10 mL hydrochloric acid as preservative (20 mL of 6 mol/L HCl).
- For aliquoted sample, please indicate total volume in mL and specific gravity, date and time of start and end of collection.
- For females, urine can be collected in a separate clean container and then carefully poured into the 24‑hour urine collection container.
Storage & Stability
(Before Processing)
- Storage: 2 to 8˚C
Stability: 3 days - Storage: 20 to 25˚C
Stability: 3 days - Storage: -20 ˚C
Stability: 1 year
Transport Temperature:
Ref (2˚C – 8˚C)
Test Category:
Routine
Test Schedule:
Daily
Results Availability:
Within 4 Hours