Consider Magnesium Homeostasis

All physicians must learn about magnesium (Mg) balance. If the serum Mg or red cell Mg is low, the patient is in a state of negative Mg balance. Even if they are both normal, Mg deficiency or negative Mg balance may be present. In such cases, a low-dose Mg load test needs to be done. Childbearing females and premature neonates are at risk for Mg deficiency. Oral repletion can be accomplished with Mg gluconate, and a technique is suggested.