FEMg: differentiates renal vs extrarenal magnesium wasting
When to use it
Use to differentiate renal magnesium wasting from extrarenal causes of hypomagnesemia.
Category
Acute Kidney Injury (AKI) Workup
References
Elisaf M et al. Miner Electrolyte Metab. 1997;23(2):66-72
Agus ZS. N Engl J Med. 1999;340(15):1177-1187
About NephroMind
This calculator is part of NephroMind, a free clinical decision-aid platform from the Arab Society of Nephrology and Renal Transplantation (ASNRT) — over 129 bedside nephrology calculators plus a renal drug-dosing database, coded by a practicing transplant nephrologist.