How do blood glucose meters work?

Answer:

Blood glucose monitors use capillary action to mix a sample of blood with glucose oxidase. This mixture, gluconic acid, mixes with yet another chemical called ferricyanide to create ferrocyanide. Using electrodes within the test strip, current is applied to the ferrocyanide. The concentration of glucose has a direct effect on the current that is then translated into a measurement that is reasonably accurate.

First answer by ID1155261059. Last edit by Bigbadbillperry. Contributor trust: 0 [recommend contributor recommended]. Question popularity: 5 [recommend question].