Nutrition reference

Lettuce, Romaine, Green, Raw

Lettuce, Romaine, Green, Raw is published in Vegetables and Vegetable Products as Foundation data. Nutrient values in this profile use a 100 g comparison basis; the displayed energy value is 21 kcal per 100 g. USDA also provides 1 household portion reference for this item where shown below. Nutrient percentiles and similar-food links compare only values with matching units across the published FoodData Central collections. These comparisons describe the dataset and are not dietary recommendations, medical advice or a substitute for individual nutrition guidance.

3.1Calorie Percentile
5Similar Foods Count

Key facts

Serving size
100 g reference basis
Calories
20.8
Food category
Vegetables and Vegetable Products
Food class
FinalFood
Food data type
Foundation
Publication date
10/28/2022
Historical reference
No
Nutrients
Ash0.606 g
Calcium, Ca27.6 mg
Carbohydrate, by difference4.06 g
Copper, Cu0.049 mg
Energy (Atwater General Factors)20.8 kcal
Energy (Atwater Specific Factors)17.5 kcal
Iron, Fe0.267 mg
Magnesium, Mg12.0 mg
Manganese, Mn0.227 mg
Niacin0.371 mg
Nitrogen0.156 g
Phosphorus, P23.4 mg
Potassium, K260 mg
Protein0.977 g
Sodium, Na23.0 mg
Thiamin0.063 mg
Total lipid (fat)0.071 g
Vitamin B-60.063 mg
Vitamin K (Dihydrophylloquinone)0.0 µg
Vitamin K (Menaquinone-4)0.0 µg
Vitamin K (phylloquinone)83.4 µg
Water94.3 g
Zinc, Zn0.252 mg

USDA household references

Published portions

Portions translate household measures to gram weights; nutrient comparisons on this site remain per 100 g.

AmountMeasureGram weight
1.0RACC85.0 g

USDA analytical context

Nutrient identifiers and derivation

Nutrient IDs, data-point counts and derivation descriptions are preserved from FoodData Central; blank fields were not supplied by the source.

NutrientUSDA IDNumberData pointsDerivationMethod/source description
Ash10072078AAnalytical
Calcium, Ca10873018AAnalytical
Carbohydrate, by difference1005205NoneNCCalculated
Copper, Cu10983128AAnalytical
Energy (Atwater General Factors)2047957NoneNCCalculated
Energy (Atwater Specific Factors)2048958NoneNCCalculated
Iron, Fe10893038AAnalytical
Magnesium, Mg10903048AAnalytical
Manganese, Mn11013158AAnalytical
Niacin11674068AAnalytical
Nitrogen10022028AAnalytical
Phosphorus, P10913058AAnalytical
Potassium, K10923068AAnalytical
Protein1003203NoneNCCalculated
Sodium, Na10933078AAnalytical
Thiamin11654048AAnalytical
Total lipid (fat)10042048AAnalytical
Vitamin B-611754158AAnalytical
Vitamin K (Dihydrophylloquinone)11844298AAnalytical
Vitamin K (Menaquinone-4)11834288AAnalytical
Vitamin K (phylloquinone)11854308AAnalytical
Water10512558AAnalytical
Zinc, Zn10953098AAnalytical

Field-level provenance

Sources for this profile

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Reference data can change. Verify consequential decisions against the original source.