Fish — marine, predatory (tuna, swordfish, shark, king mackerel)
HMTc standard for Fish — marine, predatory (tuna, swordfish, shark, king mackerel) (Seafood, category 6). Values are stated in the product’s native basis — as sold — per the locked methodology. The standard publishes per analyte; an analyte renders a firm limit only when it has cleared all five shipping gates.
- Standard version: 2.2 (2026-06-09)
- Methodology: HMTc-10 / P97-clean / P45-dirty (CLAUDE.md Part 19, Governing Principles v2.0)
- Native basis: as sold
- Analyte panel: Pb, tAs, iAs, Cd, tHg, MeHg, Ni, Cr-VI, Sn, Al
- Literature baseline: Heavy Metal Index — fish-marine-predatory (the independent evidence this standard is applied to; one-way citation)
Per-analyte standard
| Analyte | In scope | Limit (native basis) | Basis | Rationale | Status |
|---|---|---|---|---|---|
| Pb | — | — | — | — | not in scope |
| tAs | — | — | — | — | not in scope |
| iAs | — | — | — | — | not in scope |
| Cd | yes | 50 ppb (7.14 ppb prepared for feeding) | as sold | regulatory-alignment — cap: eu2023_cd_fish_muscle_50 | published |
| tHg | yes | 1000 ppb (142.86 ppb prepared for feeding) | as sold | regulatory-alignment — cap: eu2023_hg_predatory_fish_1000 | published |
| MeHg | yes | — | as sold | READY FOR REVIEW (regulatory cap applies); distinct_sources=4; sens_band=stable; classif… | in development |
| Ni | — | — | — | — | not in scope |
| Cr-VI | — | — | — | — | not in scope |
| Sn | — | — | — | — | not in scope |
| Al | — | — | — | — | not in scope |
Analyte scope
This disclosure travels with the mark so a certified product is never silently uncontrolled on an analyte.
- Published (firm limit in force): Cd, tHg
- In scope, in development (no firm limit yet): MeHg
- Out of scope for this subcategory: Pb, tAs, iAs, Ni, Cr-VI, Sn, Al
HMTc standards are living, versioned documents. This page reflects 2.2 (2026-06-09) as of 2026-06-22. Superseded versions remain at stable URLs so prior citations resolve. The threshold-setting methodology is described in Program Structure.