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. 2009 Jun:11 Suppl 1:S17-24.
doi: 10.1089/dia.2008.0133.

The chemistry of commercial continuous glucose monitors

Geoffrey McGarraugh  1
Affiliations

The chemistry of commercial continuous glucose monitors

Geoffrey McGarraugh. Diabetes Technol Ther. 2009 Jun.

Abstract

The analytical methodologies of the continuous glucose monitors (CGMs) commercialized to date are described. The devices include two noninvasive products: the GlucoWatch (Cygnus, Redwood City, CA) G2 Biographer uses iontophoresis to obtain a sample and electrochemistry for glucose detection, and PENDRA (Pendragon Medical Ltd., Zurich, Switzerland) utilizes impedance spectroscopy. Three minimally invasive systems employ subcutaneous amperometric sensors-Guardian REAL-Time (Medtronic MiniMed, Sylmar, CA), DexCom STS-7 (DexCom, San Diego, CA), and FreeStyle Navigator (Abbott Diabetes Care, Alameda, CA). The GlucoDay (A. Menarini I.F.R. S.r.l., Florence, Italy) collects a sample with a minimally invasive microdialysis fiber and measures the glucose electrochemically.

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