<prompt> All are TRUE regarding Net Protein Utilisation, except -It is the increase in weight per unit weight of consumedNPU of cow - milk is 81NPU of average Indian food is 50-80If NPU is low, more protein is required  <response>: Increase in weight per unit weight of consumed is called protein efficiency. NPU is the nitrogen retained by the body per nitrogen intake. REF. PARKS TEXTBOOK OF PREVENTIVE AND SOCIAL MEDICAL 21ST EDITION. PAGE NO - 586 