Inclusion Criteria:  Positive 50g GCT result between 7.8-11.0 mmol/L Female Singleton pregnancy Informed consent obtained and signed  Exclusion Criteria:  Use of steroids, terbutaline, or metformin within the last 4 weeks Previous diagnosis of diabetes type 1 or 2 outside of pregnancy or diagnosis with any form of diabetes prior to 20 weeks of pregnancy Allergy to any ingredients (including the non-medicinal ingredients) in Dex4® tablets or Glucodex solution