Purpose
PeptideCheck is a compound-first protocol reference for research peptides. It summarises published research and community reports so that readers can see what is known, how well it is supported, and how to work out reconstitution and storage figures.
Authorship and review
Human-researched and AI-assisted with full editorial review. Pages are researched by Sam, MBA, Founder & Lead Researcher, with the help of AI tools for gathering and drafting. Every protocol page is reviewed and edited by Sam before it is published, and shows the author and its last reviewed date. See About.
AI output is never published as written: each figure is checked against the cited source before the page goes live.
Sources
Every number on a protocol page is tied to a citation. A figure without a source is not published; where no source supports a value, the field stays empty.
Sources we use
- Approved drug labels and regulator documents.
- Peer-reviewed trials and studies, cited by PubMed ID or DOI.
- Animal and in-vitro studies, labelled as such.
- Public community posts, only with a source link and the community-reported label.
- Supplier catalogue data (names, sizes, prices, batch certificates) for product facts, never as evidence of an effect.
Sources we do not use
- Unsourced claims, screenshots with no link, or private messages.
- Supplier marketing copy as evidence for a range or an outcome.
Evidence grades A to E
Each range, schedule or storage figure carries one grade, shown beside it.
- A: approved drug label. A figure from the approved prescribing information of a medicine.
- B: human clinical trial. A published trial in people, cited by PubMed ID or DOI.
- C: human observational study or case series. Reports of people without a controlled design.
- D: animal or in-vitro study. Converted to a human-equivalent figure with the HED formula and always shown apart from human data.
- E: community-reported. A range reported by users, shown only with a public source link and the label “Community-reported, not clinically validated”.
When no published human dose-finding trial exists, a page may show a range reported by the community. It is always shown with a public source link and the label “Community-reported, not clinically validated”, graded E, and a note that no published human trial exists where that is true. Animal data is shown separately and is never presented as a human figure.
Citations on every number
Doses, frequencies, durations, cycle lengths, storage times and side-effect statements each link to their source in the references of the page. If you cannot find the source of a figure, tell us and we will either add it or remove the figure.
Calculators
Each calculator runs the same formula on the server and in the browser, and both are tested against a shared set of worked examples. Calculators do arithmetic on the numbers you enter; they do not recommend an amount.
Batch certificates (COAs)
The COA library lists certificates of analysis published for Pepcore batches, with the laboratory, purity, batch number and a link to the PDF. A certificate describes one batch and is not an endorsement. A certificate submitted by a visitor is stored as unverified and is not shown until an administrator compares its details.
Client disclosure
PeptideCheck has a commercial relationship with Pepcore and may earn a commission on Pepcore links. Pepcore links are tracked and marked as sponsored. Our policy is that Pepcore does not edit or approve page content. The full text is in the disclosure.
Updates and corrections
Every page shows a last reviewed date, and a page is reviewed again when a new source or a change in a source is found. Changes to the site are recorded in the changelog.
Report an error or a missing citation: info@peptideprotocolcheck.com. We acknowledge corrections, fix confirmed errors and update the page’s reviewed date.
What this site is not
- Not medical advice, a diagnosis or a prescription.
- Not a pharmacy, a clinic or a healthcare provider.
- Not an invitation to use any compound: nothing listed is intended for human consumption.
- Not independent of Pepcore: the commercial relationship is disclosed on every page that links to it.
See the disclaimer.