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

Options

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

A

Explanation

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/ 10 mL. Glucose is reabsorbed and does not appear in the urine as long as its blood level does not exceed 180 mg/ 100 mL.