Protein Quality Index (Amino Acid Score)

The Protein Quality Index in the program is based on data from the “Report of the Joint FAO/WHO Expert Consultation on Protein Quality Evaluation" as outlined in the CFR.

The Protein Quality Scoring Pattern (mg/g protein) is the suggested pattern requirement for pre-school children (age 2-5 years).  This pattern is used in the context of U.S. food labeling for foods intended for consumers 1 year and older.

Protein Quality Scoring Patterns (mg/g protein)

Indispensable Amino Acid

Recommended FNB/IDM Pattern

Histidine 19
Isoleucine 28
Leucine 66
Lysine 58
Methionine + Cystine25
Phenylalanine + Tyrosine63
Threonine 34
Tryptophan 11
Valine35

Source:  the “Report of the Joint FAO/WHO Expert Consultation on Protein Quality Evaluation"