The Protein Quality Index in the program is based on data from the 2002 Macronutrient DRI report

The Protein Quality Scoring Pattern (mg/g protein) is based on the 1-3 year old estimated average requirements for both indispensable amino acids and for total protein. It is recommended that these values be employed for all age groups except infants.

Protein Quality Scoring Patterns (mg/g protein)

Indispensable Amino Acid

Recommended FNB/IDM Pattern

Histidine 18
Isoleucine 25
Leucine 55
Lysine 51
Methionine + Cystine25
Phenylalanine + Tyrosine17
Threonine 27
Tryptophan 7
Valine32

Source: Dietary Reference Intakes for Energy, Carbohydrate, fiver, fat, fatty acids, cholesterol, protein and Amino Acids (macronutrients), FNB, IOM, p 5-17, 2002.