From New Hampshire, USA:
How do glucometers work?
Most glucometers still work by spreading a drop of blood on a piece of filter paper impregnated with the enzyme glucose oxidase. This converts the blood glucose into gluconic acid and hydrogen peroxide. The change in acidity or hydrion concentration that occurs at this time changes the colour of an indicator. This in turn can be detected by a change in the intensity and wavelength of a reflected light beam.
An alternative approach is to measure the change in hydrogen ion concentration or pH amperometrically (that is, by measuring the voltage change in a current passed through the blood sample).
Original posting 8 Apr 1999
Posted to Blood Tests and Insulin Injections
Last Updated: Tuesday April 06, 2010 15:09:01
This Internet site provides information of a general nature and is designed for educational purposes only. If you have any concerns about your own health or the health of your child, you should always consult with a physician or other health care professional.
This site is published by Children With Diabetes, Inc, which is responsible for its contents.
© Children with Diabetes, Inc. 1995-2014. Comments and Feedback.