<prompt> Best indicator of protein quality:-DIAASAmino acid scorePDCAASProtein efficiency ratio  <response>: Best indicator of protein quality: DIAAS Digestible indispensable amino acid scores PDCAAS Protein digestibility-corrected amino acid score NPU Net protein utilization. DIAAS 100 x . NPU 100 x Nitrogen retained by the body Nitrogen intake Other indicators: Amino acid score, Biological value, Protein efficiency ratio. Amino acid score 100x mg of amino acid per gm of test proteinmg of same amino acid per gm of reference protein Also remember, protein quantity is measured by protein energy ratio 100 x energy from protein total energy in diet. 