What Is Continuous Glucose Monitor? A Practical Definition for Health Tech Leaders
Continuous Glucose Monitor (CGM) defined: a wearable sensor that measures glucose around the clock, replacing routine fingersticks.
Health technology runs on vocabulary, and few terms carry more weight in current strategy conversations than Continuous Glucose Monitor (CGM). Here is what it means, why it matters, and the context every reader of our wearables & rpm coverage should have.
The definition
Continuous Glucose Monitor (CGM) is a wearable sensor that measures glucose around the clock, replacing routine fingersticks. In practical terms, modern sensors last more than two weeks and pair with dosing software and AI-driven coaching programs.
Why it matters now
Consider the current numbers: global wearable shipments now exceed 136.5 million units per quarter.
Meanwhile, oura has sold 5.5 million rings, projects roughly $1.5 billion in 2026 revenue, and has filed confidentially for an IPO (our coverage).
Where you'll see it in our coverage
The term appears throughout our Wearables & RPM reporting and the related topic feeds, where the companies, policies, and studies shaping it are tracked daily. When headlines reference Continuous Glucose Monitor, this page is the grounding to read them with.
The bottom line
Watch the regulatory calendar: the rules being written this year will shape this market for the rest of the decade.