What Attestory is
Attestory is an editorial verification registry. We do not sell research peptides, do not broker transactions, do not collect email addresses, and do not give medical advice. Our sole function is to teach the verify-before-you-buy framework: what a real Certificate of Analysis looks like, who is qualified to issue one, and how to read its evidence fields before trusting any batch.
Every editorial decision here is guided by one principle: verification is not a feeling — it is a repeatable, evidence-based protocol. We hold ourselves to the same standard we describe.
The four-measure verification framework
Attestory evaluates and describes COA data against four mandatory measures. A certificate that cannot report all four is incomplete by definition.
High-performance liquid chromatography purity (floor: ≥98% for research work), with the chromatogram attached so the main peak and its area integration are visible. A bare percentage with no chromatogram is a claim, not evidence.
Liquid chromatography–mass spectrometry identity confirmation: the found [M+H]⁺ mass must match the expected value for the named compound, with the mass spectrum shown. Purity alone cannot prove identity — the molecule could be pure but wrong.
Residual water content measured by Karl Fischer titration. This determines the true net peptide mass in lyophilized material and is required for any accurate dosing calculation in a research context.
Bacterial endotoxin by LAL (Limulus Amebocyte Lysate) assay, reported in EU/mg. Relevant for any cell-culture or in-vivo research use where endotoxin contamination would confound results.
Independence — the non-negotiable criterion
The entire value of a Certificate of Analysis rests on the independence of whoever issued it. This is the single most important line in any record we describe.
A seller-issued certificate is not verification. It is marketing: the seller is grading its own work, and the commercial incentive runs in one direction — toward a passing grade. Our guidance consistently requires a certificate issued by a third-party laboratory that has no financial stake in the outcome of the analysis.
What we look for in an issuing laboratory
- ISO/IEC 17025 accreditation with a verifiable accreditation number from a national body (e.g., A2LA, UKAS, DAkkS, NATA)
- A named physical laboratory with a verifiable address
- Validated analytical methods documented by the lab
- An analyst signature or stamp, and an analysis date contemporary with the batch manufacture date
- No commercial relationship with the vendor supplying the material under test
On in-house quality control: We recognise that some vendors maintain internal QC laboratories. We do not dismiss in-house QC as worthless — it may form part of a vendor's process — but we are clear that it is not a substitute for independent third-party verification. The standard we describe throughout this site is independent and external.
Lot-number matching
A COA is only meaningful for the specific batch it describes. An undated generic "sample" certificate, or a certificate with a lot number that does not match the material a buyer would receive, provides no verification of that batch.
Our framework requires that the lot number on the certificate match exactly the lot number on the label of the material in question. This is a binary check: either it matches or it does not.
Regulatory and standards framing
Attestory frames its guidance against internationally recognised standards and principles. We do not invent our own criteria. The core reference points are:
- ISO/IEC 17025:2017 — General requirements for the competence of testing and calibration laboratories. This is the international benchmark for laboratory accreditation.
- USP general chapters — United States Pharmacopeia analytical methods for purity (HPLC), identity (MS), water content (Karl Fischer), and endotoxin (LAL) used as reference method descriptions.
- WHO quality principles — World Health Organization good practices for pharmaceutical quality control laboratories, used as framing for what "independent" and "accredited" mean in practice.
We do not claim regulatory authority. We describe what these standards require so that readers can apply the same criteria when evaluating a COA.
What Attestory does not do
To be clear about our scope and to prevent misuse of our content:
- We do not endorse, recommend, or rank any specific vendor or supplier of research peptides.
- We do not advise on purchase decisions for specific compounds or batches.
- We do not give medical advice, dosing guidance, or treatment recommendations.
- We do not give legal advice on the regulatory status of any compound in any jurisdiction.
- We do not test or analyse any material ourselves — we are an editorial resource, not a laboratory.
Content review and currency
Content on Attestory is reviewed on a rolling basis. We update articles when relevant standards change, when new analytical methods become common practice, or when our editorial review identifies material that requires correction. Each page carries a "last updated" date.
If you identify an error or have a correction to propose, contact the editorial team at the address linked in the footer.
Conflict-of-interest policy
Attestory does not accept sponsored content, paid placements, or vendor advertising. The only commercial arrangement on this site is an affiliate link housed at /unlock/ (noindex, nofollow), which provides access to a curated external resource. This arrangement does not influence the editorial content published elsewhere on the site — our verification criteria are applied uniformly and are not adjusted based on commercial relationships.
Scope note
Research peptides discussed on this site are referenced as materials used in laboratory settings where applicable. Legal status varies by country and jurisdiction. Nothing on this site constitutes a recommendation to purchase, use, administer, or obtain any substance. Always consult a licensed physician before considering any use.