The Hyperglycemic and Adverse Pregnancy Outcomes (HAPO) study showed that increasing levels of plasma glucose are associated with birth weight above the 90th percentile, cord blood serum C-peptide level above the 90th percentile, and, to a lesser degree, primary cesarean deliveries and neonatal hypoglycemia.11 There were also associations between increased maternal plasma glucose levels and premature delivery, shoulder dystocia, preeclampsia, and hyper-bilirubinemia. The results of the HAPO and Australian Carbohydrate Intolerance Study in Pregnant Women (ACHOIS)12 studies indicate that maternal hyperglycemia that does not meet diagnostic criteria for overt diabetes still has a correlation with perinatal disorders and problems. This association suggests a need to reevaluate the standards and criteria for diagnosing and treating hyperglycemia in pregnancy.