Literature scope
No source is listed on this row. Lyophilized research-chemical vials are filed on the category page. This row remains the destination for pre-formulation powders.
Direct answer
For the question of whether research peptide powders get heavy-metal tested, this row is pre-formulation raw anabolic-androgenic steroid and peptide powders, and no source is listed on it. Janvier et al. 2018 tested 27 lyophilized research-chemical vials, and those figures are on Research Chemicals, Peptides & SARMs, not as a bulk pre-formulation lot (Impurity profiling of the most frequently encountered falsified polypeptide drugs on the Belgian market, DOI 10.1016/j.talanta.2018.06.023). Oral dietary-supplement powders are a different row, Oral solids: powders (bulk tubs, sachets, stick packs).
v2.1 Step Zero scaffold — Category 26 (Peptides, SARMs, and Research Chemicals), Row 4. This row is defined in the taxonomy and its Step Zero lock (
docs/governance/category-26-step0-lock.md) but carries no candidate values yet. It is a routing destination. Sources populate it as ingest proceeds, after which a synthesis pass fills the evidence sections.
Sources
Update history
The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.