Lettuce: histamine not detected
Not detected
Every study used here reported it below their detection limit — under 0.10 mg per 100 g. That is a ceiling, not a zero: the assay could not see it, which is not the same as the food containing none.
By portion
| Portion | Grams | Histamine |
|---|---|---|
| 1 serving | 100 g | under 0.10 mg |
Source
“Lettuce ( Lactuca sativa L.) — not detected (n=42); Dala-Paula (2012)”
“Lettuce, American ( L. sativa cv Lucy Brown) — not detected (n=9); Coelho (2001)”
“Lettuce, American ( L. sativa cv Lucy Brown) — not detected (n=36); Coelho et al. (2005)”
“Lettuce, American, minimally processed ( L. sativa cv Lucy Brown) — not detected (n=27); Coelho (2001)”
Also tracked for this food: oxalate
Food composition data, not medical advice. Reported tolerance thresholds vary widely between individuals, so a value being high here does not mean you will react to it.