Reducing Substances in Urine Sample Quiz
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Questions and Answers

Which substance in urine reduces ammoniacal Cupric Sulphate to red cuprous oxide?

Glucose

What is the normal range for glucose in blood during fasting?

3.6-6.4 mmol/l

What is the condition characterized by an excess of sugar in the urine?

Glycosuria

What is the renal threshold for glucose reabsorption in the proximal tubules?

<p>160 -180 mg/100ml</p> Signup and view all the answers

Name one other reducing substance found in urine besides glucose.

<p>Galactose, lactose, fructose, maltose</p> Signup and view all the answers

What change occurs to copper ions in the presence of a reducing substance in urine?

<p>Cu++ is changed to Cu+ forming brick red copper (i) oxide</p> Signup and view all the answers

What is the significance of detecting glucose in urine?

<p>It can be pathologically significant</p> Signup and view all the answers

What happens when blood glucose concentration exceeds the renal threshold?

<p>Glucose appears in the urine</p> Signup and view all the answers

What are some causes of glycosuria?

<p>Diabetes, kidney disease</p> Signup and view all the answers

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