Blood Test vs. CGM Movie: Guide to Continuous Glucose Monitors
You had your blood sugar checked. It was “normal.” Given the recent surge in interest surrounding metabolic health, more people are seeking to understand not just their basic labs, but how their daily habits truly influence their internal physiology. So… does that mean your metabolism is completely healthy? Not necessarily. A single blood test gives you one moment in time. A Continuous Glucose Monitor (CGM) gives you something very different: A blood test is a photograph. A CGM gives you a movie. And sometimes, the movie reveals patterns that a single snapshot simply cannot show. But there is an important distinction: a CGM does not directly measure insulin resistance , and it cannot diagnose prediabetes or diabetes on its own. For diagnosis, established tests such as fasting plasma glucose, HbA1c , and the oral glucose tolerance test remain the appropriate medical tools. So why use a CGM? Because real-time glucose patterns give us valuable, personalized information abo...