Table 1.
Low Versus Normal Serum Magnesium in COVID-19 Studies.
| Mg Status | Serum Mg Level | COVID-19–Associated Outcomes | ||
|---|---|---|---|---|
| mg/dL | mmol/L | mEq/L | ||
| Severe hypomagnesemia | <1.58 | <0.65 | <1.3 | Present in 13% of hospitalized patients with COVID-19 [52] |
| Hypomagnesemia | <2.0 | <0.82 | <1.65 | Risk factor for severe COVID-19 [54] |
| <1.82 | <0.75 | <1.5 | Defines Mg deficiency; increased length of CCU stay [52] | |
| 1.80 | 0.74 | 1.48 | Infection severity and worsened prognosis in ICU patients with COVID-19 [55] | |
| ≤1.8 | <0.74 | <1.48 | Death [53]; predicts arterial thromboembolism [56] | |
| High normal | 2.19–2.26 | 0.90–0.93 | 1.8–1.86 | Protective against deterioration [54] |
Abbreviations: CCU, critical care unit; ICU, intensive care unit; Mg, magnesium.