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Koi PeptidesC-72.1/100Write a reviewVisit site
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Ranked #37 by grade

Koi Peptides

koipeptides.com ↗
Verified
Reviewed Jul 2026
Verified by Checkthevendor, independent COA checked & website domain confirmed.
C-
Fair
72.1/100
★★★★★Our composite grade, not user reviews
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About Koi Peptides

US research-peptide seller (Koi Research Labs LLC, Wyoming) with real per-lot third-party COAs from Freedom Diagnostics at >=99% HPLC, but on a domain created only in April 2026, so reputation is thin and unproven.

Score overview

How we score →
C-
72.1/100Fair
Lab & Purity43%
Lab Testing & COA Measured80/100
Measured Purity Measured86/100
Trust & Service31%
Transparency Editorial68/100
Reputation & Service Editorial48/100
Website & Operational Trust Editorial58/100
Value & Logistics26%
Pricing & Value Measured62/100
Shipping & Fulfilment Editorial82/100
Payment & Checkout Trust Editorial74/100

Weighted composite across 8 criteria; the letter grade follows our published bands and integrity gate.

Key facts

Independent COAIndependent 3rd-party
Lab partnerFreedom Diagnostics
Measured purityBPC-157 99.62%, GHK-Cu 99.96% (Freedom Diagnostics 2026-05); catalog released at >=99%
Ships toUnited States
Avg shipping2-4 days
PaymentCard, Bank transfer
Reship policyReplace or refund if the peptide fails an independent retest against its COA; no returns on opened vials otherwise
Last reviewed2026-07-04

Pros

  • Public per-lot COA library with real, personally-verified independent third-party tests (Freedom Diagnostics) at >=99% HPLC plus LC-MS identity and endotoxin
  • Named US legal entity, clear research-use-only labeling, card payment with chargeback recourse, fast same-day US dispatch and a COA-backed retest guarantee

Cons

  • Domain created April 2026 (~3 months old) with thin, low-volume reviews, despite heavy PR claiming it was founded in 2022
  • Sole testing lab (Freedom Diagnostics) has an ISO/IEC 17025 accreditation that is not independently verifiable, and no external cross-checks of its COAs exist yet

Is Koi Peptides legit? Common questions

Is Koi Peptides a legit peptide vendor?

Koi Peptides grades C- (72.1/100), a mixed result. Weigh the pros, cons and the score overview before ordering.

Does Koi Peptides provide third-party lab testing?

Yes, Koi Peptides publishes independent third-party Certificates of Analysis via Freedom Diagnostics, which is the single most heavily weighted factor in our grade (Lab & Purity, 43%).

Where does Koi Peptides ship to and how fast?

Koi Peptides reports shipping to United States, typically in around 2-4 days.

What payment methods does Koi Peptides accept?

Koi Peptides accepts card, bank transfer.

When was this Koi Peptides review last updated?

This grade was last reviewed on 2026-07-04 under methodology v1.0.

C-
Our verdict
Fair · 72.1/100

Genuinely strong analytical package (named-lab per-batch COAs personally verified at 99.62% and 99.96%) held back by a roughly three-month-old domain, thin reviews, and an ISO-17025 claim that cannot be independently confirmed. Promising but too new to fully trust.

Our labelled opinion, based on the dated evidence in the score overview. See how we score.

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