Extreme Peptides or Koi Peptides?
On our stars Koi Peptides comes out ahead, 3.6 to 2.7. Both let you open a certificate before you spend anything, so paperwork will not separate them for most buyers. Only Extreme Peptides lists the reference vial, so we cannot call the price question. Both take cards.
At a glance
Extreme Peptides
- StatusTrading
- BasedUS
- Trading since2010
- Outside laboratoryNot verified
- Laboratory namedNone
- Certificates open to allYes
- Certificates per lotNot verified
- Reference vial$48.99
- Free shipping from$99
- Ways to paycard, crypto, ach
- Ships abroadNo
- ShelfNot counted; vials, bulk
- FDA letterNone on record
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
Both companies sell materials labeled for laboratory research use only. Full reviews: Extreme Peptides · Koi Peptides.
Reader questions
So, Extreme Peptides or Koi Peptides?
On our stars Koi Peptides comes out ahead, 3.6 to 2.7. Both let you open a certificate before you spend anything, so paperwork will not separate them for most buyers. Only Extreme Peptides lists the reference vial, so we cannot call the price question. Both take cards. The widest gap between them is in paperwork, where Koi Peptides leads.
Can I read a certificate from each before I order?
At Extreme Peptides the certificates are open to anyone. At Koi Peptides the certificates are open to anyone and each one is tied to a lot.
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.