Magnesium, 24h Urine

Alternative Names/Synonyms	Mg
Laboratory	Core Laboratory & Transfusion Medicine
Sub-section	Biochemistry
Specimen Type	Urine
Test Code	MGUD

Clinical Significance

Assisting in workup of magnesium disorders.

Assessing risk of kidney stones.

Specimen Requirements (Sample Type)

Urine

Specimen Requirements (Volume (mL))

5 mL

Specimen Requirements (Tube Type)

24h Urine Collection Container (No Additive)

Collection Requirements

Collection Instructions

Sample Stability

Room Temperature: 3 days

Fridge: 3 days @ 2-8°C

Freezer: 1 year @ -20°C

Cause for Rejection

Specimen Acceptability and Transport Guidance

Instrument, Methodology

Roche cobas c 702, colourimetric

Test Availability

24 hours a day, 7 days a week

Routine Turnaround Time

3 hours

Reference Ranges

1.00 - 7.00 mmol/day

In case of discrepancies, always interpret results using reference ranges as stated on laboratory reports and/or electronic patient chart.

Laboratory Contact Information

416-586-4800 extension 4688