Koi Peptides or US Peptides?
On our stars Koi Peptides comes out ahead, 3.6 to 1.6. Koi Peptides lets you open its certificates before you order; US Peptides does not, and for a first order that gap matters more than any price. Only US Peptides lists the reference vial, so we cannot call the price question. Koi Peptides takes cards and US Peptides does not, which decides it for anyone who wants chargeback rights.
At a glance
Koi Peptides
- StatusTrading
- BasedSheridan, WY (registered address); warehouses Austin, TX and Long Beach, CA
- Trading since2022
- Outside laboratoryYes
- Laboratory namedFreedom Diagnostics
- Certificates open to allYes
- Certificates per lotYes
- Reference vialNot listed
- Free shipping from$200
- Ways to paycard, ach, wire
- Ships abroadYes
- ShelfNot counted; vials
- FDA letterNone on record
US Peptides
- StatusTrading
- BasedTarpon Springs, FL
- Trading sinceNot published
- Outside laboratoryNot verified
- Laboratory namedNone
- Certificates open to allNo
- Certificates per lotNot verified
- Reference vial$46.39
- Free shipping fromNot stated
- Ways to payNot stated
- Ships abroadNo
- ShelfAbout 15; vials
- FDA letterNone on record
Both companies sell materials labeled for laboratory research use only. Full reviews: Koi Peptides · US Peptides.
Reader questions
So, Koi Peptides or US Peptides?
On our stars Koi Peptides comes out ahead, 3.6 to 1.6. Koi Peptides lets you open its certificates before you order; US Peptides does not, and for a first order that gap matters more than any price. Only US Peptides lists the reference vial, so we cannot call the price question. Koi Peptides takes cards and US Peptides does not, which decides it for anyone who wants chargeback rights. The widest gap between them is in paperwork, where Koi Peptides leads.
Can I read a certificate from each before I order?
At Koi Peptides the certificates are open to anyone and each one is tied to a lot. At US Peptides the certificates are not posted where you can read them.
Are these reader reviews?
No. Both ratings come from our published formula applied to facts on each supplier’s own pages and in public records. Nobody can submit a rating here.