Research peptide retailer
CK Peptides
Not independently verifiable
See how CK Peptides compares across the Trust Index →London research-peptide retailer with 99%+ HPLC (Janoshik), third-party CoAs, RUO framing and a Trustpilot profile.
Headline price
£3.99 to £79.99
Regulated as
Not disclosed
Delivery area
UK-wide
Certificate of Analysis profile
CoA per batch
Unverified
Access
on-request
Lab
Janoshik Analytical verify a certificate →
QR-verifiable
Unverified
Founded
Not disclosed
Companies House
Not disclosed
Baseline last reviewed
2026-08-19
No UK trading entity found
We searched UK Companies House thoroughly (exact name, exact phrase, and plausible variants) and found no matching registration, despite this site presenting as UK-based. This is a Business Transparency finding and does not affect the Testing Transparency result shown above, which is scored on its own six signals only. It is not proof of wrongdoing, only that we could not confirm who operates this business: see methodology.
- ⚠ No card acquirer: crypto or bank-transfer only
- ⚠ No UK trading entity could be found despite a thorough search, though the site presents as UK-based
Re-checked on a rolling basis, not a fixed monthly cycle; see the last-verified date above. See methodology for how this is scored.
Separate from Testing Transparency
Responsible Practice assessment
Generally responsible, with room for improvementNo specific concerns were recorded for CK Peptides against our responsible-brand framework at the time of review.
We assess what a brand publishes and makes available to customers, not its intentions. Full framework and what each status means: how we assess brands. Think this is wrong? Email hello@peptideclear.co.uk with evidence.
Not yet Independently Verified
The Testing Transparency and Responsible Practice results above are free and the same for every retailer. Nobody has commissioned the deeper Independent Verification process for CK Peptides yet. Request that it be run →
Best for
Best for third-party Janoshik CoAs and active education content
Weak on
No Companies House number surfaced; bank-transfer/crypto only; CoA available rather than auto-included.
What stands out
- · Janoshik third-party CoAs
- · Minimum 99% purity
- · London address + WhatsApp support
Our verdict
Meets the floor across purity, CoA, RUO framing, UK address and contact. Bank-transfer/crypto-only checkout and the missing entity number are minor watch-items.
Last reviewed 2026-08-19. PeptideClear earns nothing when readers click through, and this link carries no tracking. Editorial criteria are documented in our methodology.
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