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The volunteers were asked to peel an orange, a kiwi, or a grape.
According to a new study published in Diabetes Care, your finger-prick blood glucose test may be "abnormally and significantly high" if you test after handling fruit without first scrubbing your hands thoroughly and vigorously.
The Tokyo study, precisely titled "Glucose Monitoring After Fruit Peeling: Pseudohyperglycemia When Neglecting Hand Washing Before Fingertip Blood Sampling," tested ten non-diabetic volunteers who had normal blood glucose levels of approximately 90 mg/dL.
The volunteers were asked to peel an orange, a kiwi, or a grape. When they then tested their blood glucose without washing their hands, their blood glucose meter produced results of 170, 180, and 360 mg/dL respectively. Even after they swabbed their test finger with alcohol five times, the meter results were inaccurately high. It was only after a thorough handwashing with tap water that they got an accurate result from their meter.
The researchers concluded, "To avoid overestimation of blood glucose using portable monitors, the hands should be washed before monitoring capillary BG, especially after fruit has been handled."
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Sources:
Diabetes Care
CTV News
Categories: Blood Glucose, Blood Sugar, Diabetes, Diabetes, Food, Food News, Sugar & Sweeteners, Type 1 Issues, Type 2 Issues
Diabetes Health is the essential resource for people living with diabetes- both newly diagnosed and experienced as well as the professionals who care for them. We provide balanced expert news and information on living healthfully with diabetes. Each issue includes cutting-edge editorial coverage of new products, research, treatment options, and meaningful lifestyle issues.

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