Sourcing
Vendor sourcing
Not a list of shops worth buying from. A record of what each vendor publishes about what is in the vial, checked the same way everything else here is checked.
Rows marked † are affiliate links: if you buy through one, this site earns a commission at no extra cost to you. That relationship does not decide who appears here and it does not soften what any row says — the findings below are the same ones that would be published without it. Every vendor on this table is one of them, and that defines what this page is: a record of the suppliers this publication has a relationship with, checked the same way everything else here is checked. It is not a survey of the market and it is not a ranking of every vendor worth considering — plenty are not on it. The rows least flattering to a partner are the ones that tell you whether to believe the rest.
Nothing here is a recommendation to buy, and a row is not a claim that a compound is safe or legal to use. Publishing a certificate of analysis turns out to separate almost nobody — most of these vendors do it. What separates them is whether the certificate can be checked away from the vendor. A self-hosted PDF means the document and the thing it certifies are controlled by the same party; a key that resolves at the laboratory’s own domain does not. One vendor below has that.
One caveat covers all of them. These certificates test a sample the vendor sent to a laboratory. Even the best of them tells you what was in the vial that went to the lab — not what is in the vial that arrives at your door.
| Vendor | Code | Third-party COA | Tested for | Noted |
|---|---|---|---|---|
| LimitlessBioChem †Checked 13 Aug 2026 | BHACK10% off | Batch-specificrecent reports on the homepageJanoshik AnalyticalVerifiable at the lab: verify.janoshik.com, key printed on each report | Content (mg)read from report #212991, not vendor copy | The only vendor surveyed whose certificates resolve to the laboratory's own domain rather than a PDF it hosts itself, and the narrowest report of the eleven once opened. Report #212991 was read in full: tests requested "TAK-653 analysis", result "TAK-653 2.02 mg" against a 2 mg label claim, batch 140726-01. That is a content assay, carrying no purity percentage and no separate identity confirmation. Every other row in this column lists what a vendor says it tests for; this one lists what a certificate actually showed. Site banners state products are for collector's purposes; the email popup is a bodybuilder photograph. |
| ResearchChemHQ †Checked 13 Aug 2026 | BHACK10% off | Batch-specificsearchable by batch numberILS Labs, Kovera Labs, Vanguard Analytical, Chromate, MZ Biolabs | Identity, Purity, Sterility, Endotoxin | Names five laboratories, more than anyone else here. Roughly 80 certificates across the catalogue, and the library is genuinely populated rather than a search box over nothing. |
| Modern Aminos †Checked 13 Aug 2026 | ZACH1010% off | Batch-specificQR on the vial, batch search, full index | Identity, Purity, Endotoxin | Best access design of the eleven, and the QR code is why: scanning the vial in your hand opens that batch's own certificate, which is the shortest route to an answer any vendor here offers. Attributes testing to "certified US-based laboratories" without naming one. The homepage states 99%+ purity in one place and 98%+ in another. |
| Ion Peptide †Checked 13 Aug 2026 | BHACK15% off | Batch-specificproduct menu, current lot flagged | Identity, Purity, Endotoxin | Library covers 150+ product and dose entries, flags which lot is current, and publishes separate endotoxin documents for many products, which most vendors do not. No laboratory named anywhere. Batch identifiers are inconsistently formatted and one entry is listed as "2025" rather than a batch number. |
| BioLongevity Labs †Checked 13 Aug 2026 | BHACK15% off | Batch-specificbrowsable index, ~359 entriesSafeCert Labs, named on the homepage only | Identity, Purity, Sterility, Endotoxin | Around 359 indexed certificates, the largest library surveyed. The homepage claims testing by three certified laboratories and names one; the certificate index itself names none. Trades as F2 Nutrition LLC, Akron, Ohio. |
| Amino Club †Checked 13 Aug 2026 | BHACK20% off | Batch-specificdedicated COA page | Identity, Content (mg) | The only vendor here that cites a laboratory accreditation standard, ISO 17025, though it names no laboratory. States testing for identity and content, which is not the same as purity, and the distinction is its own wording rather than an omission on this page. |
| American Peptides †Checked 13 Aug 2026 | BHACK10% off | Batch-specificlisted by product and lotBioviridian | Identity, Purity, Sterility, Endotoxin, Heavy metals | The most specific method claims of any vendor surveyed, naming MALDI for identity, USP <71> for sterility and ICP-MS for heavy metals. All of it is self-reported and none of it was independently confirmed. |
| Optimum Formula †Checked 13 Aug 2026 | BHACK10% off | Batch-specificsortable library, ~75 dated | Purity, Sterility, Endotoxin, Heavy metals | Publishes the longest history here, roughly 75 dated certificates back to August 2025, and it does not survive being read. Batch #HXAC8 is listed at 10.32% analytical purity and marked VERIFIED. Batch #MJBTS is listed as "9.63". Batch #HX2ZN appears as both TB500 and Semax, and #HXC1X as both CJC/IPA and Cagrilintide, which cannot both be true. No laboratory is named. Payment is by Venmo, Cash App or card-to-crypto, none of which leaves a buyer a chargeback route. |
| Limitless Life Nootropics †Checked 13 Aug 2026 | BHACK15% off | On request | Identity, Purity, Sterility, Endotoxin | Makes more testing claims than any vendor here and publishes no certificate anywhere on the site. Its own wording is the finding: "Each order includes a certificate of analysis." Documentation arrives after purchase, so nothing can be checked before buying. Verified in a real browser after an automated fetch produced the same result, because that method had already been wrong once. |
| Amino Tech †Checked 13 Aug 2026 | BHACK15% off | None published | — | Claims on each product page that "each batch is independently third-party tested to verify identity and purity" and publishes no certificate anywhere — no lab results page, no quality page, nothing in the navigation to check it against. The homepage calls its compounds "formulated exclusively for in-vivo laboratory research"; every other vendor here specifies in-vitro. The catalogue is the larger point. Alongside peptides it carries three trestolone esters, seven SARMs, and the complete post-cycle range of tamoxifen, clomifene, letrozole, raloxifene, anastrozole and exemestane — a lineup that exists to manage the effects of anabolic steroid use — plus T3, clenbuterol, DMAA and isotretinoin. This is a catalogue built around steroid cycles that also sells peptides. Its 15% signup offer matches this code. |
| BioSLab †Checked 13 Aug 2026 | BHACK10% off | None published | — | Contradicts itself on a single page. The badges read "3rd Party Tested" and "3rd Party Purity Tested"; the body copy reads "We conduct thorough in-house testing at each production stage within our analytical test lab." In-house is the opposite of third-party. Homepage only: no certificate library was found, and none is linked from it. |
What the COA column means
- Batch-specific — Certificate tied to the lot number on the vial
- Generic — One certificate reused across the catalogue
- On request — Says a certificate exists but does not publish it
- None published — No certificate of analysis published
- Verifiable at the lab — the certificate can be checked at the testing laboratory’s own site, using a key printed on the report, rather than only as a document the vendor hosts
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