Ranking
Best BPC-157 suppliers
The market's most-searched compound, ranked by batch proof: per-lot COAs, LC-MS identity results, net content — and what a 5mg vial actually costs at seven stores.
Independent supplier research
Research peptide suppliers, ranked by proof — not marketing.
Most supplier rankings are ads in disguise. The Batch Report scores research-compound suppliers on the one thing that can actually be verified: the batch testing documentation they publish — lot-level Certificates of Analysis, named third-party labs, and proof you can check before you pay.
The top 5, at a glance
Our full ranking scores seven suppliers on testing transparency (30%), COA access (25%), price (15%), payment options (15%) and reputation (15%). Here is the top of the table — the complete breakdown, with per-store evidence, is in the 2026 ranking.
| # | Supplier | Score | Proof headline | Reference price* | |
|---|---|---|---|---|---|
| 1 | Paramount Peptides | 8.8 | Lot COA on every product page + purity-refund guarantee | BPC-157 5mg · $46.75 | Details |
| 2 | Kylo | 8.7 | Three named labs; per-lot COAs + public library | BPC-157 5mg · $49.95 | Details |
| 3 | Everest Peptides | 8.4 | 7-test lot panels, QR code on the vial, 4.9★ Trustpilot | BPC-157 10mg · $44.99 | Details |
| 4 | BioEdge Research Labs | 7.3 | Batch-specific COA on every product page | BPC-157 10mg · $49.00 | Details |
| 5 | Vonox Labs Newcomer pick | 6.1 | Every batch COA published in an open library | GHK-Cu 100mg · $60.00 | Details |
*Reference prices recorded October 2026 from store pages and third-party vendor listings; prices change and are re-checked each edition. All products discussed are sold for laboratory research use only.
Latest guides & reviews
Ranking
Best TB-500 suppliers
TB-500 is sold standalone, in blends and under code names. Seven suppliers scored on the same proof standard: published lot COAs, named labs, verified prices.
Ranking
Best GHK-Cu suppliers
GHK-Cu comes in 50mg and 100mg vials — and under code names that hide it from search. Seven suppliers scored on per-lot COAs, LC-MS identity and the real per-milligram price.
Ranking
Best NAD+ suppliers
NAD+ ships in big 500mg and 1000mg formats — more money per vial, and code names on top. Seven suppliers scored on per-lot COAs, LC-MS identity and the real per-milligram price.
Ranking
Best MOTS-c suppliers
MOTS-c is a newer catalog entry — thin price history and code-name listings. Seven suppliers scored on the same proof standard: published lot COAs, LC-MS identity, named labs.
Guide
Suppliers that take credit cards
Only two of the seven suppliers we score take cards today. Every store's payment rails — cards, Apple Pay, Zelle, bank link — checked first, then ranked by testing and proof.
Guide
How to read a peptide COA
HPLC-UV purity, LC-MS identity, net peptide content, lot matching — and the red flags that should make a researcher walk away from a batch.
Review
Paramount Peptides, reviewed
The store at the end of most recommendation funnels: Accumark lot COAs on every product page and a refund guarantee that pays your testing fee. Does the proof hold up?
Review
Vonox Labs, reviewed
The budget newcomer: per-batch COAs published in an open library and some of the lowest prices in the ranking — held back by a bank/Zelle-only checkout and zero public reviews. We read the paperwork.
Comparison
Paramount vs Everest
The #1 and #3 stores, head-to-head: lot COAs and a refund guarantee with card checkout, against a 7-test panel, a 4.9★ record and the lowest prices we recorded — if you can pay by bank.
Discount code
Vonox Labs discount code
One code actually works: VONO20 — 20% off orders of $60+, verified at checkout on October 20, 2026. The code in the store's own banner doesn't. Here is the proof and the savings math.
Methodology
How we rank suppliers
The five criteria, the weights behind every score, what gets a store demoted, and how this publication makes money.
How we rank
1 · We read the batch reports
Every score starts with the supplier's published Certificates of Analysis — whether they exist, whether they name an independent lab, and whether the lot on the certificate matches the vial being sold.
2 · We score proof, not promises
Five weighted criteria: testing transparency, COA access, price, payment options and reputation. Undocumented claims score conservatively — a store can always submit documentation for re-scoring.
3 · We re-check and demote
Prices and policies are re-verified each edition. A supplier that stops publishing lot documentation, or starts hiding its proof, moves down — whoever it is.
The monthly batch brief
One email a month: ranking changes, newly published COA practices worth knowing about, price moves on reference compounds, and suppliers demoted — with the reason. No spam, no supplement marketing.
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