Table 1 shows that serum levels of creatinine, FBS, albumin, Mg, and RBC- Mg were statistically different among four groups (P =0.001). Despite significant lower levels of RBC-Mg in experimental groups (1, 2 and, 3) compared to those in controls (group 4), no significant difference between GDM pregnant women (group 1) and controls was observed concerning serum levels of Mg (P =0.9). Here, ALB is linked to gestational diabetes.