STEVE HORRELL / SCIENCE PHOTO LIBRARY STEVE HORRELL / SCIENCE PHOTO LIBRARY
Blood glucose test. Glucometer being used to prick a diabetic's finger to test his blood sugar (glucose) levels. Diabetics have to perform this test regularly. Diabetes is a metabolic disorder in which unused sugars accumulate in the blood and urine. Monitoring of blood glucose levels allows diabetics to control the disease through diet, medication and in some cases insulin injections.
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