Before revision: One formula for NPU is: NPU = {0.16 × (24 hour protein intake in grams)} - {(24 hour urinary urea nitrogen) + 2} - ( 0.1 × (ideal body weight in kilograms) / {0.16 × (24 hour protein intake in grams)} The Protein Digestibility Corrected Amino Acid Score (PDCAAS) is a more modern rating for determining protein quality, and the current ranking standard used by the FDA.
After revision: One formula for NPU is: NPU = {0.16 × 24 hour protein intake in grams)} - {(24 hour urinary urea nitrogen) + 2} - ( 0.1 × (ideal body weight in kilograms) / {0.16 × (24 hour protein intake in grams)} The Protein Digestibility Corrected Amino Acid Score (PDCAAS) is a more modern rating for determining protein quality, and the current ranking standard used by the FDA.