Research peptide retailer
CK Peptides
Not independently verifiable
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
Trust Index status
CoA: weak / closed20/100 · D
Founded
Not disclosed
Companies House
Not disclosed
Business Transparency
Not established
Last verified
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 caps the CoA tier below green regardless of score. 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 the CoA score
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 [email protected] with evidence.
Not yet Independently Verified
The CoA tier and Responsible Practice status above are free and mechanical. Nobody, including CK Peptides, has paid for the deeper lab-accreditation, batch-traceability, and corporate-history checks 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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