How do glucose test strips work?

Written by chris sherwood
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How do glucose test strips work?
Diabetics need to test glucose levels regularly. (healthproductsforyou.com)

Glucose testing is an important part of a diabetics daily health care. Without testing, a diabetic can easily become ill because his glucose levels are not where they need to be. To do glucose testing, a diabetic uses a glucose testing meter, which uses a glucose testing strip.

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Introduction

Glucose testing is an important part of a diabetics daily health care. Without testing, a diabetic can easily become ill because his glucose levels are not where they need to be. To do glucose testing, a diabetic uses a glucose testing meter, which uses a glucose testing strip.

The lancet

Before a glucose strip can work, a drop of blood must be placed on the strip. That is done by poking the skin with a needle called a lancet. The lancet pricks the finger, allowing a drop of blood to flow onto the glucose strip.

Testing

Once the blood sample has made it on to the glucose strip, a device called a glucose meter is used to measure the glucose in the blood. In each test strip, there is a chemical called glucose oxidase. This chemical reacts with the glucose in your blood sample and creates an acid called gluconic acid. The gluconic acid then reacts with another chemical in the testing strip called ferricyanide. The ferricyanide and the gluconic acid then combine to create ferrocyanide.

Results

Once ferrocyanide has been created, the device runs an electronic current through the blood sample on the strip. This current is then able to read the ferrocyanide and determine how much glucose is in the sample of blood on the testing strip. That number is then relayed on the screen of the glucose testing meter.

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