Nephrology · Internal Medicine · Critical Care
Estimated Magnesium Deficit calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Target serum magnesium for repletion planning; 2.0 mg/dL is a common adult target.
Result
Complete all required inputs to calculate the score.
Formula inputs
- Body weight (kg)Accepted range: 10 to 250
- Serum magnesium (mg/dL)Accepted range: 0.5 to 5
- Target serum magnesium (mg/dL)Accepted range: 1.5 to 3
Primary source
Rude RK. Magnesium metabolism and deficiency. Endocrinol Metab Clin North Am. DOI: 10.1016/j.ecl.2009.07.003. PMID: 19840591. Scope: approximate total-body magnesium deficit (mmol) ≈ 0.5 × body weight (kg) × (target serum magnesium − measured serum magnesium) after converting mg/dL to mmol/L (divide by 2.43). (2009)
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