Question

Normal level of urea in blood plasma is

• A. 80-100 mg/100mL blood
• B. 18-38 mg/100 mL blood
• C. 30-40 mg/100 mL blood
• D. 1-10 mg/100 mL blood

Answer 1

Answer: (B)

Human blood normally contains $18$ to $38mg$ of urea per $100mL$ blood.