Comparative Sensitivity of Specific Amino Acid Ratios versus “Essential to Nonessential” Amino Acid Ratio

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Abstract
The sensitivity of the ratios of glycine to serum valine, cystine, and tyrosine, respectively, have been studied relatively with a ratio of groups of serum amino acids constituted by valine + leucine + isoleucine in the numerator and glycine + serine + alanine in the denominator. The ratios were measured in comparable groups of subjects differing in dietary characteristics and nutritional background. The ratio of valine to glycine has a higher distinguishing (discriminating) power for moderate protein-calorie malnutrition as indicated by the statistical analysis of the data.