Finnrick, an independent testing programme, publishes 4 assays for Tirz Peptide, and all 4 that it grades met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation). Most recent assay 4 Aug 2026.
Tirz Peptide listed by Finnrick as "Trading". Source: Finnrick, https://www.finnrick.com/vendors/tirz-peptide.
Tirz Peptide sells to businesses rather than direct to researchers and operates from China. It lists 12 products, including BPC-157, Kisspeptin, CJC-1295, Ipamorelin, MOTS-c, and TB-500, plus 2 other compounds. It also produces and labels to order, so stock sold under other brand names may come from here.
In its own words: “TIRZ-PEPTIDE is a manufacturer of all kinds of peptides, we offer a wide range of peptides that are unmatched in purity and effectiveness, every batch is carefully tested to ensure that customers receive the good products. We have our own research lab,and production line.”
Tirz Peptide names Janoshik Analytical in its copy but publishes no certificates, so there is nothing on the site to check that against. Of the 12 product pages we opened, every one states 99.8% purity and 1 link a certificate for that item.
No prices are published. You have to ask over messaging before you can compare cost against another supplier. Payment is by cryptocurrency, bank transfer, credit card, and paypal. Orders ship with DHL, FedEx, USPS, and Australia Post.
Worth knowing before you order: operates from China and no research-use-only notice. The site presents itself as CN, but infrastructure and contact evidence point to China. Evidence: Site copy references China; Site copy references United States; Lists a US/Canada (+1) contact number.
Site check: 12 products listed; payment by cryptocurrency, bank transfer, credit card, paypal; ships via DHL, FedEx, USPS, Australia Post; operates from China.
Tirz Peptide is listed as active.
| Product | Assays | Result |
|---|---|---|
| Retatrutide | 4 | 4 passed, 0 failed |
Source: Finnrick, as published 2026-08-09. Pass and fail are Finnrick's classification against its own threshold, not ours.
| Status | Active |
|---|---|
| Vendor type | Research-use supplier |
These details were read from Tirz Peptide's own website on 2026-08-10. Pages consulted:
Tirz Peptide is listed as active and we hold 4 Finnrick assays (4 passing, 0 failing its purity threshold). That is evidence about the batches that were tested or published, not a guarantee about the vial you receive.
Yes. Finnrick, an independent testing programme, publishes 4 assays for Tirz Peptide, and all 4 that it grades met its Purity focus threshold (at least 99.5% purity, no more than 35% dosage deviation). Most recent assay 4 Aug 2026.
Tirz Peptide accepts Cryptocurrency, Bank Transfer, Credit Card, PayPal.
Tirz Peptide ships from China and uses DHL and FedEx and USPS and Australia Post.
Popular peptides: Semaglutide, Tirzepatide, Retatrutide, BPC-157, CJC-1295, Ipamorelin.
Other reviewed vendors: TMates Peptides Review, TN Jone Peptides Review, Tong Peptide Review.