Complete Protein
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A Complete Protein contains all 9 of the Essential Amino Acids necessary for human health.  Some foods contain all the essential amino acids on their own in a sufficient amount to qualify as a "Complete Protein.” The USFDA has a “Protein Digestibility Corrected Amino Acid Score (PDCAAS) and a perfect score is 1.0.  Certain Dairy products (including whey), Egg Whites, and soy protein isolate earn a PDCAAS score of 1.0.

Varieties

Other foods, such as Amaranth, Buckwheat, Hempseed, Meat, Poultry, Soybeans, Quinoa, Seafood, and Spirulina also are Complete Protein Foods, though they earn a PDCAAS score of slightly less than 1.0.

Nutritional Value

Essential Amino Acid                      mg/g of Protein

 Tryptophan                                               7

 Threonine                                                 27

 Isoleucine                                                 25

 Leucine                                                     55

 Lysine                                                        51

 Methionine+Cystine                                   25

 Phenylalanine+Tyrosine                            47

 Valine                                                        32

 Histidine                                                    18

Source: The National Institute of Health