Peptide Scanner, London
The top 1% of peptide suppliers on Peptide Scanner, November 2026
We ranked 892 research peptide shops on 4 November 2026. Zenith Bioscience came first. Eight shops made the top 1%. We also name the best in the US, UK, EU and Australia.
On 4 November 2026 we ranked the 892 research peptide shops we score. Eight made the top 1%. Zenith Bioscience came first, with 35 of 60. The other seven are Modified Aminos, Glacier Aminos, Power Peptides, Peptidology, Purgo Labs, BluePeak Peptides and Oasis Labs. Under them we list the best shops in the US, the UK, the EU and Australia.
The score adds up three things we can check from outside: lab certificates (25 points), reviews (20) and what people say on forums and Reddit (15). Another 40 points are for our own lab test. We have not lab-tested any shop in this list, so the most they can score today is 60. The typical shop scores 16.
A high rank means a shop has more public proof than others. It does not mean a product is pure, or that everything the shop says is true. Where a shop's own page shows a problem, we list it next to the score. Read the full page before you trust a rank.
No shop pays for its score or its badge. The badge is for November 2026 only. We rank again every month, and a shop can lose it.
Top 1% of all shops
Zenith Bioscience
No. 1 supplier · 1st of 892 · 35 of 60
Certificates 21 of 25 · Reviews 9.2 of 20 · Community 4.5 of 15
We hold 107 of its lab certificates, all from one lab, Kovera Labs. We only started tracking it in September 2026.
Modified Aminos
Top 1% supplier · 2nd of 892 · 34 of 60
Certificates 21.2 of 25 · Reviews 10 of 20 · Community 3 of 15
Forum and Reddit talk raises serious concerns. On its own certificates, 29 of 53 measured vials are more than 3% over or under the label.
Glacier Aminos
Top 1% supplier · 3rd of 892 · 34 of 60
Certificates 19.6 of 25 · Reviews 8.4 of 20 · Community 6 of 15
On its own certificates, 171 of 198 measured vials are more than 3% over or under the label.
Power Peptides
Top 1% supplier · 4th of 892 · 34 of 60
Certificates 16.7 of 25 · Reviews 12.8 of 20 · Community 4.5 of 15
We checked 7 of its own claims against the documents it publishes, and 6 do not match.
Peptidology
Top 1% supplier · 5th of 892 (tied) · 33 of 60
Certificates 17.5 of 25 · Reviews 8.4 of 20 · Community 7.5 of 15
We have no current prices for it. On its own certificates, 4 of 14 measured vials are more than 3% over or under the label.
Purgo Labs
Top 1% supplier · 5th of 892 (tied) · 33 of 60
Certificates 19.7 of 25 · Reviews 9.2 of 20 · Community 4.5 of 15
On its own certificates, 59 of 72 measured vials are more than 3% over or under the label.
BluePeak Peptides
Top 1% supplier · 7th of 892 (tied) · 33 of 60
Certificates 19.2 of 25 · Reviews 8 of 20 · Community 6 of 15
We now follow 22 of its products at live prices.
Oasis Labs
Top 1% supplier · 7th of 892 (tied) · 33 of 60
Certificates 22.3 of 25 · Reviews 6.4 of 20 · Community 4.5 of 15
On its own certificates, 36 of 59 measured vials are more than 3% over or under the label.
Best in the US
Zenith Bioscience
No. 1 in the US · 1st of 429 · 35 of 60
Modified Aminos
Top 1% in the US · 2nd of 429 · 34 of 60
Glacier Aminos
Top 1% in the US · 3rd of 429 · 34 of 60
Power Peptides
Top 1% in the US · 4th of 429 · 34 of 60
Best in the UK
BluePeak Peptides
No. 1 in the UK · 1st of 217 · 33 of 60
Wholesale Peptides
Top 1% in the UK · 2nd of 217 · 33 of 60
Certificates 20.6 of 25 · Reviews 8 of 20 · Community 4.5 of 15
On its own certificates, 4 of 6 measured vials are more than 3% over or under the label.
Best in the EU
One other EU shop has the same score, but it carries a flag on its page, and a flagged shop cannot hold a badge. We give the EU a No. 1 badge only, with no top 1% group.
RetaEU
No. 1 in the EU · 1st of 84 (tied) · 33 of 60
Certificates 17.7 of 25 · Reviews 10.4 of 20 · Community 4.5 of 15
On its own certificates, 10 of 10 measured vials are more than 3% over or under the label, and 1 of 17 purity results is below the 99% it advertises.
Best in Australia
Solatide Biosciences
No. 1 in Australia · 1st of 25 · 29 of 60
Certificates 18 of 25 · Reviews 6.4 of 20 · Community 4.5 of 15
On its own certificates, 11 of 14 measured vials are more than 3% over or under the label. Its score is below the 30.1 the other country badges need. Australia is the one exception.