Koi Peptides review

Quick take

Koi Peptides, run by Koi Research Labs LLC since 2022, gets the fundamentals right: a lot-searchable certificate library with real PDFs, two US warehouses, same-day dispatch and a retest-and-refund promise. Two things need explaining before a first order. The BPC-157 product link redirects, without notice, to a second store called Kylo Peptides at the same registered address. And the only lab name you will find is inside the PDF, not on the site.

Who this supplier suits

Koi Peptides is a fit for a US lab that wants lot-searchable certificates, card, ACH or wire payment, and fast domestic delivery, and for institutional buyers abroad who can clear the pre-approval step. GLP-class items under coded names (GLP-1 SG, GLP 2 (TZ), GLP 3 (Reta)) are openly listed alongside BPC-157, TB-500, GHK-Cu, Ipamorelin, Tesamorelin, MOTS-c and NAD+, all as vials.

It is less suited to buyers who need endotoxin or sterility results on the certificate, or who require a supplier with an operating address rather than an agent’s office.

Testing in plain English

The site says material is tested in-house by HPLC and LC-MS and then blind-retested at an independent ISO/IEC 17025-accredited laboratory for HPLC, LC-MS, ICP-MS metals, LAL endotoxin and, per the About page, sterility. The library at koipeptides.com/coa/ delivers PDFs by lot number.

The published BPC-157 10mg certificate is from Freedom Diagnostics and reports HPLC-UV purity of 99.62%, LC-MS identity confirmed and 12.14 mg net content. That covers purity, identity and quantity. Endotoxin and sterility do not appear on the published document, so we record them as unknown despite the marketing claim.

One housekeeping problem: the library index for BPC-157 lists lot 2604060200 tested April 7, 2026, but the PDF it links to is Freedom Diagnostics accession 2605290215, reported 05/31/2026, for a lot labeled Clear Blue Cap. Match the lot on your vial to the PDF, not to the index.

Prices and shipping

Mid-tier. GLP-1 SG 10mg is $69.95, and GLP 2 (TZ) and GLP 3 (Reta) are $89.95 each. BPC-157 10mg is $49.95, but that price is served from kylopeptides.com after the redirect; the Koi homepage showed BPC-157 at $0.00 in its popular-peptides block at our check, and no 5mg price could be verified.

US orders placed before 2 PM Eastern on business days ship the same day by USPS Priority (2 to 4 business days), UPS 2-Day Air or UPS Next Day Air. Shipping is a flat $9.95 under $200 and free above it.

Service, returns and payments

Phone support only (+1 833-854-9601); no email is published. The research-use-only disclaimer is present. The Sheridan, WY address is a registered-agent office.

Opened vials cannot be returned. Damaged, incorrect or short shipments must be reported within 48 hours with photos, and replacement or refund is at the company’s discretion. Lost packages confirmed by the carrier are reshipped free. The FAQ adds that a product failing to match its COA on independent retest is replaced or refunded.

Payments are card, ACH and wire. Its Trustpilot profile shows 3.9 from 32 reviews, 7 of them one-star, and was merged from other profiles. No FDA warning letter naming Koi Peptides was found; search results point to an unrelated company, Koi CBD, LLC.

Final word

Koi Peptides has the certificate library and the logistics a lab buyer wants. Before ordering, understand that you may be checking out on Kylo Peptides instead, and match the lot on your vial to the PDF rather than the index.