Protein Quality reflects amino acid profile and digestibility.
| Source | Completeness | Notes |
|---|---|---|
| Whey, milk, eggs | Complete | High leucine and digestibility |
| Poultry, fish, beef | Complete | Dense per serving |
| Soy | Complete | Useful for plant-based diets |
| Pea + rice mix | Complete together | Combine for full profile |
| Collagen | Incomplete | Low in tryptophan; not a primary protein source |