Koi Peptides review: Has a lot-searchable certificate library

Quick take

Koi Peptides is the brand of Koi Research Labs LLC, a company that says it was founded in 2022 and that its material is synthesized and lyophilized in the United States at a partner facility it does not name. Its registered address, 30 N Gould St, Ste R, Sheridan, Wyoming, is a registered agent’s office rather than a place where anything is made or shipped; the shipping happens from warehouses in Austin, Texas and Long Beach, California. The catalog is vials only, and it lists GLP-class items openly under the coded names GLP-1 SG, GLP 2 (TZ) and GLP 3 (Reta), alongside BPC-157, TB-500, GHK-Cu, Ipamorelin, Tesamorelin, MOTS-c and NAD+.

Koi Peptides has a lot-searchable certificate library, two US warehouses and a retest-and-refund promise, which is most of what a lab buyer wants

We opened the certificate library and read the BPC-157 PDF, followed the product links, read the shipping policy, the FAQ and the about page, and checked the Trustpilot profile and the public record. Along the way we found something neither site mentions: the Koi BPC-157 product page sends you to a different store.

That is the thing to know. The certificates and the logistics are good, and you may finish your order on a website called Kylo Peptides.

Testing, in plain English

The site says material is tested in-house by HPLC and LC-MS and then blind-retested at an independent laboratory accredited to ISO/IEC 17025 for HPLC, LC-MS, ICP-MS heavy metals, LAL endotoxin and, according to the about page, sterility. The laboratory is never named in the site’s own words. You find out who it is only by opening a certificate. The library at koipeptides.com/coa/ is searchable by lot and links directly to PDFs with no login, which is the right way to publish.

The BPC-157 10 mg certificate we opened is from Freedom Diagnostics. It reports purity of 99.62 percent by HPLC-UV, identity confirmed by LC-MS, and a net content of 12.14 mg. That covers purity, identity and quantity, and it is a solid document. What it does not cover is endotoxin or sterility, so despite the marketing claim we record both as unknown; the published certificate simply does not show them. If your lab needs those results, ask for them before you order and see whether a document exists.

One housekeeping problem needs your attention. The library index for BPC-157 lists lot 2604060200, tested April 7, 2026. The PDF that entry links to is Freedom Diagnostics accession 2605290215, reported May 31, 2026, for a lot labeled Clear Blue Cap. The index and the document do not agree. When your vial arrives, match the lot on the label to the lot on the PDF, not to the index entry, and if they do not line up, ask the company which document is current.

Prices, shipping and policies

Prices sit in the middle of the market. GLP-1 SG at 10 mg is $69.95, and GLP 2 (TZ) and GLP 3 (Reta) are $89.95 each. BPC-157 at 10 mg is $49.95, but that price comes from kylopeptides.com, because the Koi product URL koipeptides.com/product/bpc-157/ returns a 301 redirect to that domain. The Koi homepage showed BPC-157 at $0.00 in its popular-peptides block when we looked, and we could not verify a 5 mg price anywhere on koipeptides.com.

About the redirect: Kylo Peptides is operated by Kylo Labs LLC at the same Sheridan registered address with a different phone number, and it names Janoshik, Freedom Diagnostics and Vanguard Laboratory as its labs. Neither site discloses the relationship. We do not know whether this is a rebrand in progress or two brands under one owner, and the sites do not say. You should know which store is charging your card before you confirm, if only so the statement entry makes sense later.

Shipping is a strength. US orders placed before 2 p.m. Eastern on a business day ship the same day by USPS Priority, which takes two to four business days, or by UPS 2-Day Air or Next Day Air. Shipping is a flat $9.95 under $200 and free above it. International delivery exists but only to qualifying research institutions in Canada, the UK, the EU, Australia and selected APAC markets, with pre-approval required. Payments are card, ACH and wire.

Returns and guarantees are specific. 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 the most useful line: if a peptide does not match its certificate on independent retest, the company replaces it or refunds the order. Phone support is published at +1 833-854-9601; no email is. The research-use-only disclaimer is present. The Trustpilot profile shows 3.9 from 32 reviews, seven of them one-star, and was merged from other profiles. We found no FDA warning letter naming the company; search results point to an unrelated business, Koi CBD, LLC.

Should you order here?

Koi Peptides fits a US lab that wants lot-searchable certificates it can read before ordering, pays by card, ACH or wire, and needs quick domestic delivery from a real warehouse. It also fits an institutional buyer abroad who can clear the pre-approval step, and a lab that wants GLP-class items under coded names from a supplier that publishes documents for them.

It is less suited to a buyer who needs endotoxin or sterility results on the published certificate, who requires a supplier with an operating address rather than an agent’s office, or who is uncomfortable completing a purchase on a differently named site.

Our read is favorable with two conditions. Confirm which store, Koi or Kylo, is taking your payment, and match the lot on your vial to the PDF rather than to the index. With those two checks done, the retest-and-refund promise makes a first order reasonable.