What is the most accurate CGM in 2026?

Based on published MARD data, Dexcom G7 reports the lowest accuracy deviation at approximately 8.2–8.5% (1) .

What does MARD mean in CGM devices?

MARD (Mean Absolute Relative Difference) measures how closely CGM readings match laboratory reference glucose values. Lower percentages indicate higher accuracy.

Is Libre 3 nearly as accurate as Dexcom G7?

Yes. Libre 3 reports a MARD around 8.9% (2) , which remains within a highly accurate clinical range.

Does CGM accuracy affect insulin pump performance?

Yes. In hybrid closed-loop systems, improved accuracy can enhance automated insulin delivery decisions.

Are implantable CGMs more accurate?

Eversense E3 reports a MARD around 8.5% (4) , comparable to leading disposable CGMs.

Implantable CGM

Reviews

Dexcom G7 Ranked Most Accurate CGM for 2026 in Published Clinical Data
ByResearch Team February 22, 2026March 9, 2026

Read More Dexcom G7 Ranked Most Accurate CGM for 2026 in Published Clinical Data