Jaiwant Rangi, MD, FACEEndocrinologist | Founder, Lower The Dose® | Speaker

Unlocking the Complete Picture: Why Continuous Glucose Monitors Outshine the Finger Prick

18 Aug 2026 · 1 min

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Dr. Jaiwant Rangi explains how continuous glucose monitors reveal the full picture of blood sugar swings that finger pricks miss. A single day might show a pre-breakfast reading of 120 mg/dL, a spike to 260 mg/dL after eating, then a drop to 60 mg/dL, but without continuous data you never know what happens between those points.

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And what the CGM, continuous glucose monitor, does is it connects those dots. So like, for example, before breakfast, your blood sugar could be 120. After eating, you could be 260. And then maybe you didn't check anything after breakfast, and you check it again at 3 o'clock, and you're 60. I have no idea where did you go between 120 and 60. Did you go too high, or did you just keep going down? So it completes the picture. It gives me a lot more values. No matter how many times you can do finger prick, you cannot replace CGM with finger prick.