Peptide Warehouse has good testing disclosure and flexible payment, but its prices run above the median. When we checked on October 19, 2026, it named Freedom Diagnostics, showed lot numbers alongside its COAs and mentioned endotoxin testing. It accepts Zelle, crypto and Apple Pay. Eight of the nine listings we priced cost more per mg than the median across the vendors in our price index, and we found no Finnrick tests for it.
Notice: Products from Peptide Warehouse are sold for in-vitro laboratory research only. They are not FDA-approved and not for human or animal use. This review covers supplier transparency and prices only. We didn't buy or test any products. Some vendors pay us a commission when you buy through our links. That never changes a score or a price ranking.
Peptide Warehouse at a glance
- Website: peptide-warehouse.com, live when checked.
- Based in: not published on its site when we checked on October 19, 2026.
- Company: no legal entity, owner or founding year published.
- Testing labs/COAs: Freedom Diagnostics named; guide to reading a peptide COA, a COA index and an analytical testing page; lot numbers with COAs; endotoxin testing mentioned.
- Independent tests (Finnrick): we found no Finnrick tests for it.
- Payment: Zelle, crypto, Apple Pay.
- Gate: none found.
- Catalog: 39 peptide products listed.
- Checked: October 19, 2026.
Prices we checked
| Peptide | Size | Price | Per mg | vs index median |
|---|---|---|---|---|
| CJC-1295 + Ipamorelin | 5mg | $85.99 | $17.20 | 157% above |
| Ipamorelin | 10mg | $76.99 | $7.70 | 24% above |
| Selank | 10mg | $74.99 | $7.50 | 48% above |
| Semax | 10mg | $74.99 | $7.50 | 67% above |
| KPV | 10mg | $59.99 | $6.00 | 9% above |
| PT-141 | 10mg | $43.99 | $4.40 | 2% below |
| Melanotan II | 10mg | $43.99 | $4.40 | 10% above |
| Thymosin Alpha-1 | 10mg | $129.99 | $13.00 | 62% above |
| Sermorelin | 10mg | $87.99 | $8.80 | 4% above |
Prices as listed on October 19, 2026; we priced 9 listings from its 39-product catalog. PT-141 was the only one under the median across the vendors in our price index, Sermorelin and KPV were close to it, and the CJC-1295 + Ipamorelin blend was 157% above. Compare PT-141 prices, ipamorelin prices and Thymosin Alpha-1 prices in our price index.
Testing and COAs
Peptide Warehouse has more testing pages than most vendors: a COA index, a certificates of analysis overview, an analytical testing page and a guide to reading a COA. Its site names Freedom Diagnostics, says products are third-party tested by HPLC and MS, shows lot numbers alongside its COAs and mentions endotoxin testing.
We have not verified the certificates with the lab. There is also no independent data to check them against, since we found no Finnrick tests for this vendor.
What we like
- A named testing lab (Freedom Diagnostics) and lot numbers with COAs.
- Endotoxin testing mentioned, plus HPLC and MS testing claims.
- Several payment options: Zelle, crypto and Apple Pay.
- A return window for unopened items and a separate 60-day satisfaction guarantee, per its FAQ.
- Same-day UPS shipping advertised.
What to watch
- Prices above the index median on 8 of the 9 listings we priced, often by 40% or more.
- No Finnrick tests found.
- No location, company name or owner published.
- Testing claims are the vendor's own and unverified by us.
How it compares
On disclosure, Peptide Warehouse is ahead of many vendors we track. On price, cheaper per-mg options exist for most compounds we priced here. See all vendors we track, peptide deals this week and our ranked list.
Bottom line
Peptide Warehouse names its lab, ties COAs to lots and offers a more generous return policy than many vendors. It lacks independent test data, doesn't say who runs it and charges above the median on most listings we priced. Check its prices against our index before ordering.
