Magnesium, 24 Hrs Urine


Magnesium urinary excretion is diet dependent. In addition, it is enhanced by increasing blood alcohol levels, diuretics, Bartter’s syndrome, corticosteroids, cis-platinum therapy and aldosterone. See Also Magnesium, Serum


Renal magnesium excretion occurs in renal transplant recipients who are on cyclosporine and prednisone. Hypercalcaemia, hypophosphataemia and acidosis are among the inhibitors of tubular reabsorption of magnesium. In magnesium deficiency, urinary magnesium decreases before serum magnesium.

Sample Type, Quantity & Conditions

5 ml of 24 Hrs Urine Collection Stability: 3 Days at 15-25 °C 3 Days at 2-8 °C 1 Year at (-15)-(-25) °C

Special Precautions

State 24 Hrs urine volume. Samples should be acidified to pH 1 with concentrated HCL. Collect urine samples in metal-free container.

Normal Range

72.9 - 121.5 mg/24 Hrs 3.0 - 5.0 mmol/24 Hrs

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