Cmsr Labs

Cmsr Labs is a UK-based vendor operating in both retail and bulk markets, with shipping limited to the UK. The catalogue includes 11 peptides, with Janoshik-verified COAs available for 2 of them — 5 reports showing purity around 98.9%. Pricing is listed for most products. Community signal is minimal: a single customer-service mention with a negative lean, so there's little established texture on what the buying experience looks like.

Data last updated

Cmsr Labs lab testing & COAs

ARA 290
Latest
Identity Purity Weight Endotoxin Sterility Metals Independent lab
Mazdutide
Latest
Identity Purity Weight Endotoxin Sterility Metals Independent lab
Melanotan II
Latest
Identity Purity Weight Endotoxin Sterility Metals Independent lab
PT-141
Latest
Identity Purity Weight Endotoxin Sterility Metals Independent lab
Retatrutide
Latest Mar 12, 2026
Identity Purity Weight 5.52 mgEndotoxin Sterility Metals Independent lab
Selank
Latest
Identity Purity Weight Endotoxin Sterility Metals Independent lab
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Price

regional price-per-mg comparisons · prices checked 15d ago

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Common questions

Is Cmsr Labs legit?

We don't issue verdicts — we publish the evidence and let it speak. For Cmsr Labs we have 1 substantiated community mention from real, linkable sources. We hold 2 captured lab documents (COAs) for this vendor. Our automated site audit has verified the vendor's published catalogue and COA surface. The sections on this page hold the evidence behind each of those numbers.

What do customers say about Cmsr Labs?

We have captured 1 substantiated community mention of Cmsr Labs across customer service (1, mostly negative). Each count reflects real, linkable reports — the quotes behind every number are in the community sections on this page.

Does Cmsr Labs publish third-party lab tests (COAs)?

2 of 10 observed peptides have a COA mapped to them. Latest captured reports are from Janoshik.