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The labyrinth of foil inside a glucometer strip reveals a fragile chemistry. If you peel open the plastic covering, many inner circuits contain some version of biosensor technology, electrochemical cells screen-printed with gold or other precious metals and coated in places with enzymes. The foil serves as a conductor for electrons in a drop of blood, allowing a brand-matched glucometer machine to measure the charge a sample holds. Yet costly design components (including gold) are also part of the reason that glucometer strips remain too expensive for most people in the world who have diabetes.
DepartmentMassachusetts Institute of Technology. Department of Anthropology
Moran-Thomas, Amy. "Glucometer Foils." Limn 2017, 9 (November 2017): 74-81 © 2017 Limn
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