| Comments |
P.236 right column: "Total plasma Mg concentrations (MgT), in relation to this tight control, are remarkably constant in healthy subjects throughout life and do not tend to change with aging [primary source 1, ref 6] (figure 2). MgT concentration ranges from 0.65 to 0.95 mmol/L. In the serum Mg exists in 3 forms: a protein-bound fraction (25% bound to albumin and 8% bound to globulins), a chelated fraction (12%), and the metabolically active ionized fraction (Mg-ion: 55%) [primary sources]. MgT, probably because of the large part bound to proteins or chelated, is not very sensitive in detecting subclinical Mg deficiencies." |