Protein quality - how well the body is able to use a protein - can be assessed based on the amino acid composition, how well it matches the body requirements, and how easy it is to digest.4
Egg white protein has all the nine essential amino acids the body needs and it’s highly digestible, making it one of the protein sources with the highest protein quality score according to multiple protein quality rating methods.5-8
Egg white protein contains amino acids important for muscle growth and maintenance like leucine, lysine, and methionine, which are typically present in lower quantities or deficient in other protein sources like plant proteins.6, 27, 28