A statistically significant negative correlation of the vaspin level and the glucose levels: fasting, at the first and at the second hours of OGTT, were observed in patients with GDM (R = −0.371, −0.472, −0.575, respectively) and in the control group (R = −0.514, −0.364, −0.348, respectively). This evidence concerns the gene SERPINA12 and gestational diabetes.