JOHN GREIM / SCIENCE PHOTO LIBRARY JOHN GREIM / SCIENCE PHOTO LIBRARY
Diabetic blood test. A medical health care worker uses a "glucometer" to measure the level of blood glucose in an elderly diabetic woman. The diabetic has had her finger pricked to extract a drop of blood. The blood is placed on a chemically coated strip which activates the digital display of the "glucometer". Diabetes mellitus is a carbohydrate metabolism disorder, in which unused sugars accumulate in the blood and urine. It is usually caused by insufficient insulin production by the pancreas. Treatment is is based on a strict diet to control blood sugar, and success can be tested in counselling sessions such as this. Insulin injections may be required.
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