EDWARD KINSMAN / SCIENCE PHOTO LIBRARY EDWARD KINSMAN / SCIENCE PHOTO LIBRARY
Diabetic child checking her blood sugar level. A drop of blood obtained with a lancing device is placed on a test stick and analyzed with a glucometer, a blood glucose tester. In this image the child is using a spring-loaded needle to prick her skin so that she can collect a small amount of blood for the blood glucose tester.
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