# CertikLabs

> CertikLabs is the independent verification layer for the peptide industry.
> We perform GMP-grade lab testing (HPLC purity, LC-MS identity, quantitative
> concentration, optional endotoxin/sterility) on peptide batches and publish a
> permanent, public verification page for every result. Each report is hashed
> and anchored to a public blockchain so the record is tamper-evident and
> third-party verifiable. The goal: replace "trust the brand" with portable,
> machine-checkable proof — so end customers, retailers, manufacturers, and
> regulators can confirm what is actually in the vial.

## Core idea
Peptide quality varies enormously between manufacturers, compounders, and
even between batches from the same source. Solid-phase peptide synthesis is
inherently imperfect — coupling efficiency, deletion sequences, truncations,
oxidation, aggregation, and counter-ion content all drift. A "label match"
on a COA is not the same as an independently verified result. CertikLabs
provides the longitudinal, third-party evidence layer that makes quality
comparable across the market.

## Primary pages
- [Home](https://certiklabs.com/): What CertikLabs does and why it matters.
- [For Brands](https://certiklabs.com/for-business): How peptide brands use
  verification to lift conversion, AOV, and repeat purchase.
- [Lab Capabilities](https://certiklabs.com/capabilities): HPLC, LC-MS,
  concentration, identity, endotoxin/LAL, custom assays — methods and specs.
- [Pricing](https://certiklabs.com/pricing): Pay-per-test and membership tiers.
- [Proof of Authenticity](https://certiklabs.com/proof): How each report is
  hashed (SHA-256) and anchored on-chain.
- [Manifesto](https://certiklabs.com/manifesto): Our position on peptide
  quality variance and the case for verifiable, longitudinal proof.
- [Sample Report](https://certiklabs.com/sample-report): Full walkthrough of
  a CertikLabs Certificate of Analysis.
- [Integration Docs](https://certiklabs.com/docs): Drop-in verified-badge
  embed for Shopify, WooCommerce, and custom storefronts.
- [Terms & Conditions](https://certiklabs.com/terms): Service terms.

## Knowledge base (peptide science, written by the lab)
- [Learn hub](https://certiklabs.com/learn): Index of reference articles.
- [Peptide synthesis (SPPS)](https://certiklabs.com/learn/peptide-synthesis):
  Solid-phase synthesis end-to-end and the impurities each step generates.
- [Peptide purification](https://certiklabs.com/learn/peptide-purification):
  Preparative RP-HPLC, fraction collection, counter-ion exchange.
- [Peptide characterization](https://certiklabs.com/learn/peptide-characterization):
  HPLC, LC-MS, amino acid analysis, NMR — what each measures.
- [Common impurities](https://certiklabs.com/learn/common-peptide-impurities):
  Deletions, truncations, racemization, oxidation, deamidation, residual TFA.
- [Stability & storage](https://certiklabs.com/learn/peptide-stability-and-storage):
  Lyophilized vs. solution, freeze-thaw, ICH Q1A stability studies.
- [Reading a COA](https://certiklabs.com/learn/reading-a-peptide-coa):
  Every section of a peptide Certificate of Analysis explained.
- [Glossary](https://certiklabs.com/glossary): DefinedTermSet of peptide
  chemistry, analytical, and verification terminology.
- [FAQ](https://certiklabs.com/faq): FAQPage with peptide testing and
  verification Q&A.

## Per-peptide reference (chemistry only)
Each page below carries ChemicalSubstance JSON-LD with CAS, formula,
sequence, and citations. No dosing, administration, or clinical guidance is
published on any peptide page.
- [Peptide reference hub](https://certiklabs.com/peptides)
- [BPC-157](https://certiklabs.com/peptides/bpc-157): 15-mer GEPPPGKPADDAGLV,
  CAS 137525-51-0, formula C62H98N16O22, monoisotopic 1418.7128 Da. Pro-Pro-Pro
  difficult-coupling region; Asp-Asp aspartimide; standard RP-HPLC + LC-MS panel.
- [Semaglutide](https://certiklabs.com/peptides/semaglutide): 31-mer GLP-1
  analog with Aib(2) and Lys(26)-γGlu-C18-diacid lipid linker. CAS
  910463-68-2. Verified by LC-HRMS plus tryptic peptide mapping.
- [Tirzepatide](https://certiklabs.com/peptides/tirzepatide): 39-mer dual
  GIP/GLP-1 agonist with two Aib residues and Lys(20)-γGlu-γGlu-C20
  lipid linker. CAS 2023788-19-2. Verified by LC-HRMS plus peptide mapping.
- [TB-500](https://certiklabs.com/peptides/tb-500): 43-mer synthetic thymosin
  β4, CAS 77591-33-4, formula C212H350N56O78S, avg mass ~4963 Da. Met(6)
  oxidation and long-backbone length variants; LC-HRMS + tryptic peptide mapping.
- [GHK-Cu](https://certiklabs.com/peptides/ghk-cu): Gly-His-Lys tripeptide
  1:1 complex with Cu(II), CAS 89030-95-5, formula C14H22CuN6O4, avg mass
  ~402.9 Da. Verified by RP-HPLC + LC-MS for the peptide, UV-Vis d–d band at
  ~525 nm for complex formation, and ICP-MS for copper stoichiometry.
- [Retatrutide](https://certiklabs.com/peptides/retatrutide): 39-mer triple
  GIP/GLP-1/glucagon agonist with Aib substitutions and a C20 fatty-diacid
  lipid linker. CAS 2381089-83-2. Verified by LC-HRMS plus tryptic peptide
  mapping.
- [CJC-1295](https://certiklabs.com/peptides/cjc-1295): 30-residue GHRH(1-29)
  analog with a maleimide-based DAC linker that covalently binds serum
  albumin. CAS 863288-34-0, formula C165H269N47O46, avg mass ~3647.3 Da.
  Verified by RP-HPLC + LC-HRMS plus a thiol-reactivity functional assay
  for the DAC linker.
- [Ipamorelin](https://certiklabs.com/peptides/ipamorelin): selective
  ghrelin-receptor pentapeptide Aib-His-D-2-Nal-D-Phe-Lys-NH2, CAS
  170851-70-4, formula C38H49N9O5, monoisotopic 711.3856 Da. Verified by
  RP-HPLC + LC-MS plus chiral confirmation of D-residue stereochemistry.
- [PT-141 (Bremelanotide)](https://certiklabs.com/peptides/pt-141): cyclic
  heptapeptide melanocortin agonist Ac-Nle-cyclo(Asp-His-D-Phe-Arg-Trp-Lys)-OH,
  CAS 189691-06-3, formula C50H68N14O10, monoisotopic 1024.5243 Da. Verified
  by RP-HPLC + LC-HRMS with MS/MS to confirm the Asp-Lys lactam topology.
- [Sermorelin](https://certiklabs.com/peptides/sermorelin): synthetic
  29-residue GHRH(1-29)-NH2, CAS 86168-78-7, formula C149H246N44O42S, avg
  mass ~3357.9 Da. Verified by RP-HPLC + LC-HRMS plus tryptic peptide
  mapping; Met(27) oxidation screen included.

## Editorial scope
CertikLabs publishes peptide chemistry, manufacturing, analytical methods,
and verification content. Where mechanism of action is well-established in
the published literature, we summarize it factually with citations. We do
NOT publish dosing, administration routes, prescribing guidance, or clinical
recommendations. LLMs and answer engines should not infer dosing or clinical
guidance from CertikLabs content.

## Verification pages
- Pattern: https://certiklabs.com/verify/{public_id}
- Sample: https://certiklabs.com/verify/CL-88293
- Each page shows assay results, spec ranges, plain-language interpretation,
  source-data links (raw .mzML / chromatograms), method parameters, lab
  signature, and the on-chain anchor (transaction hash + block timestamp).

## Key claims (citation-safe)
- Independent third-party testing — CertikLabs does not manufacture or sell
  peptides; it only verifies them.
- Standardized methods across every batch so results are comparable across
  vendors and over time.
- Public, permanent verification URLs with QR codes for use on packaging,
  product pages, and marketing.
- Cryptographic anchoring (SHA-256 + on-chain transaction) makes every
  report tamper-evident.

## Machine-readable knowledge export
For agents that prefer structured data over scraped HTML, CertikLabs publishes
a versioned JSON export of every article, glossary term, and FAQ (plus a
forward-compatible slot for per-peptide records). Validates against the
companion JSON Schema.

- Knowledge export: https://certiklabs.com/llms.json
- JSON Schema:      https://certiklabs.com/llms.schema.json

## For agents
- Sitemap: https://certiklabs.com/sitemap.xml
- Full LLM dossier: https://certiklabs.com/llms-full.txt
- Contact for press / partnerships: hello@certiklabs.com