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Given the information about blood glucose levels in diabetic and what you know about facilitated diffusion...

Given the information about blood glucose levels in diabetic and what you know about facilitated diffusion and transport maximum, explain why testing for glucose in urine is the first step taken when confirming a diagnosis of diabetes mellitus.
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When a person has diabetes, the blood glucose levels are abnormally high. This is because of either less production of insulin or presence of unresponsiveness to insulin in the body. Insulin is a hormone secreted by pancreas that stimulates cells to absorb glucose from blood through facilitated diffusion. If insulin is absent or if the body doesn't respond to it, the glucose would be present in blood and not be absorbed. When kidneys filter blood to produce urine, this excess glucose present in blood also gets dissolved in urine and excreted. Normally there should be no glucose in urine. If there is present e of glucose in urine, then the person is diabetic.

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