Question

Assertion : Renal threshold of glucose is said to be $180 mg/100 mL$
Reason : Glucose starts appearing in the urine when its blood level exceeds $180 mg/100 \,mL$ of blood

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

Renal threshold of a substance is its highest concentration in the blood upto which it is totally reabsorbed from the glomerular filtrate. Renal threshold of glucose is about $180 mg/100\, mL$. Glucose is reabsorbed and does not appear in the urine as long as its blood level does not exceed $180m g /1 0 0\, m L$