After adjusting for age, BMI, pregnancy weight gain, delivery gestational week, nulliparous, assisted reproduction, pregnancy hypertension, pre-pregnancy diabetes, pre-eclampsia, ICP, and thyroid diseases, the risk of having GDM also increased in the elevated ALT group compared to the normal ALT group (OR: 1.564, 95% CI: 1.306–1.873) (Table 3). Here, GPT is linked to diabetes mellitus.