Corticosteroid therapy for fetal lung maturity was first endorsed back in 1994. But what do we know about its affect on glycemic levels? Pregnant women with gestational diabetes, and of course pre-existing diabetes, are at higher risk of DKA at “lower” hyperglycemic levels compared to non-pregnant individuals. In this session, we will review the data on the effect of antenatal corticosteroids on the mothers’ glycemic levels.