Recent Vendor Shutdowns — Protect Your Research

Peptide Sciences ceased operations March 2026. Science.bio closed January 2026. Our AI flagged both 60+ days before shutdown. See who's still reliable →

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The only independent ranking system analyzing purity, reputation, customer service, COAs, and community sentiment across every peptide research vendor. Updated daily by AI.

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Lab tests analyzed
2.4M
Reddit posts mined
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Live Rankings

Top-Ranked Vendors This Week

Powered by our 5-pillar Peptide Vendor Score (PVS). Updated every 24 hours from public COAs, lab tests, and community sentiment.

View all 142 ranked vendors
#1

Ascension Peptides

🇺🇸USAFinnrick Verified
95.5
PVS
Purity
98
Reputation
96
Service
94
Community
95
Pricing
92
BPC-157TB-500GHK-CuSemaglutide
#2

Limitless Life Nootropics

🇺🇸USAFinnrick Verified
91.5
PVS
Purity
95
Reputation
92
Service
90
Community
91
Pricing
88
TirzepatideRetatrutideIGF-1 LR3
#3

Peptide Partners

🇺🇸USAFinnrick Verified
90.5
PVS
Purity
94
Reputation
91
Service
89
Community
88
Pricing
91
BPC-157Melanotan IIEpithalon
#4

Pure Rawz

🇺🇸USA
88
PVS
Purity
92
Reputation
87
Service
86
Community
89
Pricing
86
SARMsBPC-157GHRP-6
#5

Amino Asylum

🇺🇸USA
86.5
PVS
Purity
89
Reputation
86
Service
88
Community
84
Pricing
85
CagrilintideSurvodutideTesamorelin
#6

Swiss Chems

🇨🇭Switzerland
84
PVS
Purity
88
Reputation
84
Service
82
Community
83
Pricing
80
PT-141CJC-1295Ipamorelin
Methodology

How We Rank. Transparently.

Every score is auditable. Every data point is traceable. No vendor ever sees their ranking before it goes live.

1
Ingest
Pull COAs, tests & Reddit daily
2
Verify
Cross-check 3rd-party labs
3
Analyze
AI sentiment on 2.4M posts
4
Score
Weight 5 pillars, compute PVS
5
Publish
Rank & detect anomalies

The 5-Pillar PVS Score Breakdown

Purity
30%
Reputation
25%
Customer Service
20%
Community
15%
Pricing / COGS
10%
Built for Researchers

Trusted by the Community That Matters

We don't take vendor money. Our only customers are researchers, biohackers, and labs who need to know the truth.

"Finally a source I trust. Saved my lab $2k on a vendor I was about to order from — turned out their last 3 COAs were recycled from 2023."

u/BioResearcher_Mk2
r/Peptides • 847 upvotes

"The shutdown prediction on Science.bio was uncanny. Flagged it 9 weeks before they disappeared with everyone's orders. This site is the real deal."

u/pharmakinetics
r/PeptideAnalysis • 1.2k upvotes

"I'm an actual biochem PhD and the purity scoring methodology is more rigorous than what I've seen in some published vendor comparisons. Impressive."

u/Dr_Helix
r/labrats • 512 upvotes
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