Diabetech - Diabetes Tech, Research, News A CGM That Measures Blood Is Coming - What You Should Know
May 19, 2025
Mark Tapsack, CSO with a materials science and implantable sensor background, and Paul Good, CEO who helped build early Dexcom tech, discuss Glucotrack. They explain intravascular blood sensing, how an implantable CBGM could reduce delays versus interstitial CGMs, device design and chemistry, implantation approach, trial results, and potential impact on automated insulin delivery.
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Blood Sensing Cuts Compartmental Delay
- Blood measurements avoid interstitial compartment delays that cause CGMs to lag during rapid glucose changes.
- Mark and Paul said blood sensing gives near real-time readings, improving alerts for rapid post‑meal rises and faster low detection.
Design For Set And Forget Patient Experience
- Reduce patient device management by offering a set‑and‑forget implant rather than frequent wearable swaps and adhesive issues.
- Paul argued that removing warm‑up, short lives, and adhesive failures simplifies daily diabetes care.
Faster CGM Data Could Improve Closed Loop
- Removing one delay (glucose sensor lag) could materially improve automated insulin delivery (AID) performance.
- Faster blood glucose data may reduce required meal announcements and increase time in range when paired with pumps.