The following foods contain the highest concentrations of leucine per standard serving:
Meat & Poultry
- Chicken Breast: ~ 2.3 g of leucine per 100g (about 3.3 g per 200 calories)
- Beef (Top Sirloin / Skirt Steak): ~ 1.3 g to 2.9 g per 100g
Fish & Seafood
- Tuna: ~ 1.9 g of leucine per 100g (about 3.6 g per 200 calories)
- Salmon: ~ 1.6 g of leucine per 100g
- Yellowtail: ~ 3.5 g of leucine per half-fillet
Dairy & Eggs
- Swiss Cheese: ~ 3.9 g of leucine per cup
- Parmesan Cheese: ~ 2.8 g of leucine per 100g
- Cottage Cheese: ~ 1.5 g of leucine per cup
- Whole Eggs: ~ 1.4 g of leucine per 200 calories
Plant-Based & Vegan Sources
- Soybeans & Edamame: ~ 3.3 g of leucine per 100g
- Tempeh: ~ 2.3 g of leucine per cup
- Pumpkin Seeds: ~ 2.4 g of leucine per 100g
- Hemp Seeds: ~ 2.2 g of leucine per 100g
- Cooked Lentils: ~ 1.8 g of leucine per 100g (about 1.1 g per 200 calories)
