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“Purity Collective Quality Team” is the byline on every compound guide, buying guide and research article published on puritycollective.co. This page explains what that team does, how pages are researched, and what we deliberately do not publish.
For laboratory research only. Nothing on this site is dosing, administration or therapeutic advice.
Batch testing and the COA library
Purity Collective Co LLC sends production lots to independent laboratories, Horizon Analytical (UPLC/MS purity and quantity, with a separate endotoxin certificate) and ILS Laboratories in San Diego (HPLC purity, identity by retention-time match, net peptide content and a fentanyl screen). The resulting certificates are posted in the COA library, each tied to a lot number and linked from the product it covers. As of October 2026 the library holds reports for 49 of the 70 catalog listings; the remaining product pages state plainly that a report is not posted yet. We never present one strength’s certificate as another’s, and pens that share a vial lot say so.
How product pages and guides are researched
- Peer-reviewed sources only. Every scientific statement on a compound guide cites a paper indexed in PubMed, identified by its PMID and DOI, or a public chemical record (PubChem, UniProt). Citations are checked against the NCBI record before publication, and the reference list is generated from that record rather than typed by hand.
- The model is stated. Cell, animal or human, and what the study did and did not measure. Negative and null results are included where they exist, and every guide has a section headed “what the evidence does not show”.
- Batch facts come from our own reports. Numbers quoted for a listing are read from the certificate for that listing’s lot. If there is no certificate, the page says so.
- Original figures. Identity cards, study tables and structure renders are made for this site from the cited data; structures credit PubChem.
- Review dates. Each guide carries a “last reviewed” date and is revisited when a new lot report is posted or a relevant paper appears.
What we do not publish
- Dosing, reconstitution, administration or protocol information of any kind.
- Health, performance, cosmetic or weight-related claims about any research material.
- Testimonials describing effects on people.
- Invented names, credentials or laboratories. The byline is a team byline because the work is a team process: catalog records, laboratory certificates and literature review, assembled and checked together.
Corrections
If you find an error on any page, a citation that does not support the sentence it is attached to, or a certificate value that does not match its PDF, email admin@puritycollective.co with the URL and the line. Corrections are made on the page and the review date is updated.
Start with the research peptides USA hub, the supplier checklist or the research library.