ICS EVIDENCE GOVERNANCE NOTEREGISTER · 2026

EVIDENCE BOUNDARY & STANDARDS DISPOSITION

Chocolate lead declined while cadmium did not

Track lead and cadmium as separate time series, preserve cocoa-solids and product-form splits, and require current lots rather than treating category-level improvement as a brand claim.

The controlling scientific record is the public Heavy Metal Index synthesis, supported by 3 named anchor sources and expressed for Lead, Cadmium.

ICS does not reproduce the source extraction here. Keeping the evidence on the independent index preserves source-level methods, units, species, basis, uncertainty, and review state. This note records only the institutional consequence of that evidence.

Track lead and cadmium as separate time series, preserve cocoa-solids and product-form splits, and require current lots rather than treating category-level improvement as a brand claim.

This disposition may change taxonomy, analyte coverage, test basis, surveillance priority, disclosure, or claim language. It does not allow a market occurrence percentile or a dramatic single study to become an initial certification value.

The finding is published in two additional authority layers: the HMI evidence record and the HMTc certification interpretation. Distribution should prioritize chocolate manufacturers, laboratories, retailers, journalists while preserving those distinct roles in headlines, briefings, interviews, and social posts.

Audience

chocolate manufacturers · laboratories · retailers · journalists

SUGGESTED CITATION

Pendergrass, K. (2026). “Chocolate lead declined while cadmium did not.” ICS Evidence Governance Notes. ICS-EGN-2026-024. Institute of Contaminant Standards.

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