SERPINA12 and gestational diabetes: On the other hand, the concentration of colostral vaspin was significantly higher in the GDM-G2 subgroup (4.77 ng/mL) than in the non-GDM group (3.12 ng/mL) (p = 0.04); however, no significant difference between the GDM-G1 (4.11 ng/mL) and GDM-G2 cohorts (p = 0.31) was found (Figure 1, Table 2).