Research peptide vendor
A small US supplier with 29 compounds and four diluents, and the documentation practice we rate highest: the lot number and the measured purity are printed on the product card in the shop, before you click into anything. The published purities range from 99.5 to 99.87 percent, a spread rather than a uniform figure.
quality claims we could confirm ourselves, rather than repeat from the vendor's marketing.
Exclusive code
15% OFF
Use ATLAS15 at checkout for 15% off any BioLongevity Labs order. First order or repeat.
15% OFF at BioLongevity Labs
Lyophilised research peptide vials, two blends, bioregulators, and four diluents including bacteriostatic saline and both glass and HDPE bacteriostatic water.
$9.99
$13.99
$17.99
$17.99
$39.99
$22.99
$24.99
$27.99
$27.99
$28.99
$32.99
$32.99
$34.99
$34.99
$34.99
$38.99
$38.99
$37.99
$42.99
$44.99
$45.99
$47.99
$47.99
$48.99
$49.99
$49.99
$54.99
$54.99
$54.99
$58.99
$59.99
$79.99
$239.99Research use only, carried in the product metadata and the site copy. The catalogue is peptides and diluents throughout, with no SARMs, prescription medicines or stimulants mixed in, which makes the framing easier to take at face value than it is at most vendors.
Graded by whether we could confirm it ourselves or are only repeating what the vendor states. A vendor's honesty about its own testing is a different question from what a published trial shows, so this is a separate scale from the evidence grades on our guides.
It is, as a badge on the card itself. BPC-157 shows lot 26107, MOTS-c shows 26118, KPV shows 26121. You can see which batch is on the shelf without clicking through, emailing anyone or creating an account.
Where the vendor states thisAlso on the card, next to the lot. The figures run 99.5 for LL-37, 99.6 for Semax and oxytocin, 99.7 for BPC-157 and several others, 99.8 across most of the range, and 99.87 for MOTS-c. A spread with odd decimals reads as measurement. A catalogue where everything is exactly 99.9 does not.
Where the vendor states thisAll 33 listings are priced in the open. Sale prices are shown against the original, so BPC-157 reads $38.99 from $42.99 and GHK-Cu reads $32.99 from $42.99.
Where the vendor states thisWe went through all 33 listings and found no SARMs, no prescription medicines, no stimulants and no nootropics. After reviewing vendors that sell clenbuterol, isotretinoin and DMAA on the same shelf as BPC-157, a catalogue that stays in its lane is worth noting.
Where the vendor states thisThe product images carry alt text describing each compound as a research peptide with a COA, and the purity is printed on the card. We did not locate the certificate documents themselves on the pages we read, so the figures are published numbers rather than documents we have opened.
Where the vendor states thisFinnrick holds no vendor profile for Cosmic Peptides, so there is no outside check on the purity figures the site publishes.
Where the vendor states thisThe purity figures and lot numbers are published on the cards, which is more than most vendors manage. A searchable document library in the manner of Disguised Alpha would let a reader check the number rather than read it.
Most of the catalogue sits between $9.99 and $80.00, so this listing is well out of line with the rest and the card does not explain what makes it different.
Finnrick has no profile for the brand, so nothing outside the vendor's own published figures speaks to what is in the vials.
There is less here to judge a supplier on than at a vendor with 200 products and a longer record.
Cosmic publishes 99.5 for LL-37, 99.6 for Semax, 99.73 for Pinealon, 99.74 for Tesamorelin, 99.78 for SS-31 and 99.87 for MOTS-c.
Look at that spread rather than the individual numbers. Compounds differ, batches differ, and a supplier reporting what came back from the lab will produce exactly this kind of ragged list with awkward decimals in it.
A catalogue where everything reads 99.9 percent is telling you about a marketing decision. Olympex Solutions publishes the same kind of spread, from 99.02 up to 99.94, and we said the same thing there: the low number is the one that makes the high ones credible.
Cosmic's lowest is LL-37 at 99.5. Leaving that on the page, next to compounds reporting 99.8, is the choice that makes the rest worth reading.
What would finish the job is the document. Olympex prints the figure and the lot; Cosmic prints the figure and the lot; Disguised Alpha lets you open the report and check it against the issuing lab. That last step is the one still missing here.
Before you go
15% OFF
Don't check out without it. Use ATLAS15 at checkout for 15% off any BioLongevity Labs order. First order or repeat.
On documentation practice it's among the best we've reviewed. The lot number and a measured purity figure sit on the product card before you buy, which almost nobody else does, and the catalogue stays to peptides and diluents. The gap is that we didn't find the certificate documents behind those numbers.
Every fact above traces to one of these pages, published by the vendor itself and checked on October 30, 2026. Vendor policy pages change without notice, so if something here looks out of date, it probably is.
Compare against
Open pricing, public COAs, strict research-only gate
