How we source, grade and review every page
Peptigraph exists because peptide information online is mostly vendor copy and forum guesswork. This page explains where our numbers come from, how strong the evidence behind them is, who checks them, and how we make money.
Where our facts come from
We start from primary sources and cite them on the page. When primary data does not exist, we say so instead of filling the gap with vendor claims.
Clinical trials
Registered trials and their published results, including dose arms and adverse events.
ClinicalTrials.gov · peer-reviewed journalsDrug labels
For approved drugs, the prescribing information is the reference for doses and warnings.
Drugs@FDA · DailyMedRegulators
Status changes, advisory votes, warning letters and anti-doping rules, each with its date.
FDA · PCAC · WADA · other national agenciesPubMed literature
Animal, cell and human studies, cited with PMID so anyone can check the original.
PubMed · PMID on every citationPrice data
Price pages show aggregates from our own price observations, not evidence about a peptide. Single-vial research-use listings only (bulk powder, lab reagents, multi-vial packs and brand pens excluded). A price counts only if it was still present on the vendor product page when re-fetched on 2026-10-02. Sizes with fewer than 3 distinct sellers are not published. Prices were first recorded on 7 Aug 2026 and last re-checked on 2 Oct 2026. We publish the median, range and price per mg for each vial size, never a seller’s name or link.
Five evidence badges
Every claim about an effect carries one badge for the strongest evidence behind it. The bars show strength at a glance; the label carries the meaning, so the badge also works without colour.
- Human RCT evidence, 4 of 4At least one randomised controlled trial in people.We write: “In a randomised trial, …”
- Human observational evidence, 3 of 4Studies in people without randomisation: cohorts, case series, registries.We write: “Observed in people, not proven to cause …”
- Animal evidence, 2 of 4Results in animals only. Effects often do not carry over to humans.We write: “Seen in rats or mice; not shown in people.”
- In vitro evidence, 1 of 4Cells or tissue in a lab dish. The weakest lab evidence.We write: “Only shown in cells in a lab.”
- Anecdotal evidence, 0 of 4Self-reports from users, including "did nothing" reports. Shown with sample size and date.We write: “Users report …, n = [count].”
How calculators are verified
- 1Formula publishedEvery calculator shows its math under the result, so you can check it by hand.
- 2Independent second buildA second person rebuilds the calculation separately and both must match on [N] worked examples.
- 3Physician sign-offOur medical reviewer checks units, syringe types and the warnings shown at the edges.
- 4Re-tested on every changeAutomated tests run on each release; a failing case blocks publishing.
volume = dose mg ÷ concentration
units = volume mL × 100 (U-100)
How pages are reviewed
Dosing pages, calculators and legal entries are checked by a named clinician before they go live. The reviewer’s name links to their credentials, disclosures and the list of pages they have signed off. Until a page passes review it shows “Medical review pending” instead of a name, and it stays out of search results.
- 01Draft from sourcesWriter cites a primary source for every number.
- 02Fact checkAn editor traces each citation back to the original.
- 03Physician reviewOur physician reviewer approves doses, units and warnings.
- 04Published, datedReviewer name and review date shown at the top.
- 05Re-reviewedOn a schedule, or within days of a regulatory change.
A reviewed page reads “Medically reviewed by” followed by the reviewer’s name, credential and the review date. A page that has not been reviewed yet shows this instead:
How we make money, and where we never do
- 01No vendor links on dosing pagesCalculators, dosing pages and peptide profiles never link to a seller. We do not name where to buy research peptides.
- 02No paid rankingsNo clinic, brand or vendor can pay to be listed, reviewed or ranked. Sort orders are published.
- 03Affiliate links: telehealth onlyThe one place we may earn a commission is the telehealth comparison, and it carries a disclosure box above the table.
Corrections policy
If we get something wrong, we fix it, date it and say what changed. Dosing and calculator errors are treated as urgent and reviewed by our medical reviewer within [N] business days. We never silently edit a number.
Recent corrections
No corrections have been published yet. When one is, it appears here and in the full corrections log.
How often we update
| Content | Scheduled check | Also updated when |
|---|---|---|
| Legal tracker | [N] business days | Any FDA, advisory committee or enforcement action |
| Dosing pages | Every [N] months | New trial results or a label change |
| Calculators | Every release | A reported error or new vial size |
| Search-trend data | Monthly | Nothing else; it is a monthly snapshot |
| Telehealth table | Every [N] weeks | A price or availability change |
Who writes and reviews
- Juan Pablo Frías, MD, FACEEndocrinologist and clinical trialist
- [Editor name]Medical editor
- [Analyst name], PhDResearch analyst