Social & Preventive Medicine Which of the following statement is TRUE about NPU (net protein utilization), used in protein quality assessment? A It is the ratio of energy from protein to total energy in diet B It is the ratio between nitrogen retained by the body and total nitrogen intake multiplied by 100 C It is the amount of one amino acid per gram of a protein divided by the amount of same amino acid per gram of egg protein D If the NPU is high the amount of protein requirement in diet is high 💡 Explanation Which of the following statement is TRUE about NPU (net protein utilization), used in protein quality assessment? ✓ Correct Answer: B. It is the ratio between nitrogen retained by the body and total nitrogen intake multiplied by 100