generated: '2026-08-09' method: searched source: https://github.com/colinearstudio/nutrientsdb-sample (README.md schema reference) name: NutrientsDB normalized nutrient schema description: The 86 normalized nutrient field names used on every NutrientsDB food record, in both the free 1,000-food Sample API and the full downloadable dataset. All values are per 100 g of the food, the standard basis for food composition data. A value is null when the source does not report that nutrient. The measurement unit is encoded as a suffix on the field name. basis: per 100 g of food null_semantics: null means the source did not report the nutrient — it does not mean zero. unit_suffixes: - suffix: _g unit: grams (g) - suffix: _mg unit: milligrams (mg) - suffix: _ug unit: micrograms (mcg) - suffix: _kcal unit: kilocalories (kcal) x-evidence: fetched: '2026-08-09' schema_reference: url: https://raw.githubusercontent.com/colinearstudio/nutrientsdb-sample/HEAD/README.md http_status: 200 live_payload: url: https://www.nutrientsdb.com/api/foods?id=2923506 http_status: 200 verification: All 86 field names in the published schema reference were matched exactly against the nutrients object returned by the live Sample API — 86/86, no additions, no omissions. field_count: 86 groups: - group: Energy and macronutrients field_count: 8 fields: - field: alcohol_g unit: g description: Alcohol (ethanol) - field: carbs_g unit: g description: Total carbohydrate - field: energy_kcal unit: kcal description: Total food energy - field: fat_g unit: g description: Total fat (lipids) - field: fiber_g unit: g description: Dietary fiber - field: protein_g unit: g description: Total protein - field: starch_g unit: g description: Starch - field: water_g unit: g description: Water content - group: Carbohydrates and sugars field_count: 8 fields: - field: fructose_g unit: g description: Fructose - field: galactose_g unit: g description: Galactose - field: glucose_g unit: g description: Glucose (dextrose) - field: lactose_g unit: g description: Lactose - field: maltose_g unit: g description: Maltose - field: sucrose_g unit: g description: Sucrose - field: sugar_added_g unit: g description: Added sugars - field: sugar_g unit: g description: Total sugars - group: Fats and fatty acids field_count: 13 fields: - field: cholesterol_mg unit: mg description: Cholesterol - field: fatty_acid_16_0_g unit: g description: Palmitic acid (16:0) - field: fatty_acid_18_0_g unit: g description: Stearic acid (18:0) - field: fatty_acid_18_1_g unit: g description: Oleic acid (18:1) - field: fatty_acid_18_2_n6_g unit: g description: Linoleic acid (18:2 n-6) - field: fatty_acid_18_3_n3_g unit: g description: Alpha-linolenic acid, ALA (18:3 n-3) - field: fatty_acid_20_5_n3_g unit: g description: Eicosapentaenoic acid, EPA (20:5 n-3) - field: fatty_acid_22_6_n3_g unit: g description: Docosahexaenoic acid, DHA (22:6 n-3) - field: fatty_acid_4_0_g unit: g description: Butyric acid (4:0) - field: monounsaturated_fat_g unit: g description: Total monounsaturated fat - field: polyunsaturated_fat_g unit: g description: Total polyunsaturated fat - field: saturated_fat_g unit: g description: Total saturated fat - field: trans_fat_g unit: g description: Trans fat - group: Minerals field_count: 16 fields: - field: calcium_mg unit: mg description: Calcium - field: chloride_mg unit: mg description: Chloride - field: chromium_mg unit: mg description: Chromium - field: copper_mg unit: mg description: Copper - field: fluoride_ug unit: mcg description: Fluoride - field: iodine_ug unit: mcg description: Iodine - field: iron_mg unit: mg description: Iron - field: magnesium_mg unit: mg description: Magnesium - field: manganese_mg unit: mg description: Manganese - field: molybdenum_ug unit: mcg description: Molybdenum - field: phosphorus_mg unit: mg description: Phosphorus - field: phytate_mg unit: mg description: Phytate (phytic acid) - field: potassium_mg unit: mg description: Potassium - field: selenium_ug unit: mcg description: Selenium - field: sodium_mg unit: mg description: Sodium - field: zinc_mg unit: mg description: Zinc - group: Vitamins field_count: 15 fields: - field: biotin_ug unit: mcg description: Vitamin B7 (biotin) - field: choline_mg unit: mg description: Choline - field: folate_ug unit: mcg description: Folate (B9) - field: niacin_equivalents_mg unit: mg description: Niacin equivalents (NE) - field: niacin_mg unit: mg description: Vitamin B3 (niacin) - field: pantothenic_acid_mg unit: mg description: Vitamin B5 (pantothenic acid) - field: riboflavin_mg unit: mg description: Vitamin B2 (riboflavin) - field: thiamin_mg unit: mg description: Vitamin B1 (thiamin) - field: vitamin_a_rae_ug unit: mcg description: Vitamin A (retinol activity equivalents) - field: vitamin_b12_ug unit: mcg description: Vitamin B12 - field: vitamin_b6_mg unit: mg description: Vitamin B6 - field: vitamin_c_mg unit: mg description: Vitamin C (ascorbic acid) - field: vitamin_d_ug unit: mcg description: Vitamin D - field: vitamin_e_mg unit: mg description: Vitamin E (alpha-tocopherol) - field: vitamin_k_ug unit: mcg description: Vitamin K - group: Carotenoids field_count: 5 fields: - field: alpha_carotene_ug unit: mcg description: Alpha-carotene - field: beta_carotene_ug unit: mcg description: Beta-carotene - field: beta_cryptoxanthin_ug unit: mcg description: Beta-cryptoxanthin - field: lutein_zeaxanthin_ug unit: mcg description: Lutein and zeaxanthin - field: lycopene_ug unit: mcg description: Lycopene - group: Amino acids field_count: 19 fields: - field: alanine_g unit: g description: Alanine - field: arginine_g unit: g description: Arginine - field: aspartic_acid_g unit: g description: Aspartic acid - field: cystine_g unit: g description: Cystine - field: glutamic_acid_g unit: g description: Glutamic acid - field: glycine_g unit: g description: Glycine - field: histidine_g unit: g description: Histidine - field: hydroxyproline_g unit: g description: Hydroxyproline - field: isoleucine_g unit: g description: Isoleucine - field: leucine_g unit: g description: Leucine - field: lysine_g unit: g description: Lysine - field: methionine_g unit: g description: Methionine - field: phenylalanine_g unit: g description: Phenylalanine - field: proline_g unit: g description: Proline - field: serine_g unit: g description: Serine - field: threonine_g unit: g description: Threonine - field: tryptophan_g unit: g description: Tryptophan - field: tyrosine_g unit: Tyrosine description: '' - field: valine_g unit: g description: Valine - group: Other compounds field_count: 2 fields: - field: caffeine_mg unit: mg description: Caffeine - field: theobromine_mg unit: mg description: Theobromine