Comparing the Accuracy of Two Glucose Sensors in Pregnant Women With Diabetes
Compares two wearable glucose sensors, worn together, in pregnant women with diabetes.
Plain-language title generated from the registry record
Registry title: CGM Accuracy in Pregnancy Study
Key facts
- Where
- Terrassa, SpainSee the site
AI summary: who the study is looking for
From the trial's eligibility criteria. Machine-read from the registry text on this page, so it can be wrong. The registry text below and the trial team decide who can take part.
The trial is looking for pregnant women with type 1, type 2 or gestational diabetes. Everyone wears two glucose sensors at the same time.
- Age
- 18 years or older
- Sex
- Women only
- Disease stage
- Type 1 diabetes, type 2 diabetes or gestational diabetes, diagnosed before 32 weeks of pregnancy
Main reasons for not taking part
- Other conditions that affect glucose metabolism
- Cannot use the glucose sensors or do finger-prick glucose tests
- No smartphone that works with LibreLink
- Cannot sign informed consent
This trial only enrols pregnant participants. The registry sentence this rests on: Pregnant women with type 1 diabetes, type 2 diabetes, or gestational diabetes, diagnosed before 32 weeks of gestation
Read by machine on 12 November 2026.
Where in Spain
- Hospital Universitari Mutua TerrassaTerrassa, SpainContact: Verónica Perea, MD, PhDNo longer taking part
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Contact the study team: see the registry record → Contacts and Locations
Print a page for my doctorTrial details
- Who runs it
- Hospital Mutua de Terrassa
- Trial code
- NCT07269015
- Record updated
- 8 December 2025
- Original description
Pregnancy in women with diabetes remains a high-risk condition, requiring strict glycemic control due to rapid physiological changes that affect insulin sensitivity. Continuous glucose monitoring (CGM) provides detailed glucose trends, but the accuracy of newer, affordable systems such as Dexcom One Plus and FreeStyle Libre 2 Plus has not been evaluated during pregnancy.Read full original descriptionShow less
Evaluation of the Accuracy of Continuous Glucose Monitoring Systems and Educational Needs in Pregnant Women With Diabetes: A Comparison Between Dexcom One Plus and FreeStyle Libre 2 Plus
Pregnancy in women with diabetes remains a high-risk condition, requiring strict glycemic control due to rapid physiological changes that affect insulin sensitivity. Continuous glucose monitoring (CGM) provides detailed glucose trends, but the accuracy of newer, affordable systems such as Dexcom One Plus and FreeStyle Libre 2 Plus has not been evaluated during pregnancy.
This prospective interventional study aims to compare the accuracy of these two CGM systems-both worn simultaneously-using capillary glucose as the reference. The study also evaluates educational needs, skills, attitudes, digital competence, lifestyle habits, and patient-reported outcomes among pregnant women with type 1 diabetes (T1D), type 2 diabetes (T2D), and gestational diabetes (GDM).
Inclusion: Pregnant women with type 1 diabetes, type 2 diabetes, or gestational diabetes, diagnosed before 32 weeks of gestation; Age ≥18 years; Willingness to wear two CGM systems simultaneously; Possession of a smartphone compatible with LibreLink; Ability to sign informed consent.
Exclusion: Comorbidities affecting glucose metabolism; Inability to use CGM devices or perform capillary glucose testing.