Performance of the Dexcom Continuous Glucose Monitoring (CGM) System in Pregnant Women With Diabetes Mellitus

Inclusion Criteria:

• Age ≥ 18 years
• Confirmed pregnancy
• Diagnosis of Gestational Diabetes (GDM), Type 1 Diabetes Mellitus (T1DM), or Type 2Diabetes Mellitus (T2DM)
• Willing to wear up to the required number of Systems for the total duration of studywear
• Able to follow study procedures;
• Able to speak, read, and write in English or Spanish.

Exclusion Criteria:

• Extensive skin changes/diseases that preclude wearing the required number of Systemsat the proposed wear sites
• Known allergy to medical-grade adhesives
• Hematocrit outside specification
• Prescribed drugs for treatment of pre-term labor or experiencing high-risk pregnancycomplications during current pregnancy
• Currently receiving dialysis treatment or planning to receive dialysis during thesensor wear period
• Currently using Hydroxyurea for treatment
• Require a Magnetic Resonance Imaging (MRI) scan, Computed Tomography (CT) scan, ordiathermy during the sensor wear period