Third-party lab testing: 3 independent Janoshik assays on file, covering 3 substances, median measured purity 99.8%, most recent test 2026-04-14.
Zjpeptix sells to businesses rather than direct to researchers and operates from United Kingdom. It lists 10 products, including BPC-157, TB-500, GHK-Cu, Retatrutide, Cagrilintide, and Semaglutide, plus 1 other compounds. It also produces and labels to order, so stock sold under other brand names may come from here.
In its own words: “We are a high-tech enterprise focused on the R&D, production, and sales of peptide-based materials and products. Our team integrates organic synthesis with biotransformation technologies to optimize yield and purity of APIs and formulations, ensuring efficient, cost-effective solutions that maximize value for clients and patients.”
Zjpeptix names Janoshik Analytical in its copy but publishes no certificates, so there is nothing on the site to check that against. Of the 10 product pages we opened, 8 state ≥98% purity.
No prices are published. You have to ask before you can compare cost against another supplier. Payment is by cryptocurrency. Orders ship with DHL, FedEx, UPS, EMS, and TNT.
Worth knowing before you order: no card payments and no research-use-only notice. Payment is limited to cryptocurrency (USDT, USDC, BTC). Neither route carries the chargeback protection a card payment gives you if an order never arrives or arrives wrong.
Site check: 10 products listed; payment by cryptocurrency; ships via DHL, FedEx, UPS, EMS, TNT; operates from United Kingdom.
Zjpeptix is listed as active. Identified through Janoshik third-party lab testing: 3 assays on file, most recent 2026-04-14.
| Substance | Measured purity | Test date |
|---|---|---|
| Ghk-cu 100mg | 99.44% | 2026-04-14 |
| Tirzepatide 20mg | 99.81% | 2026-04-14 |
| Retatrutide 20mg | 99.82% | 2026-04-14 |
| Status | Active |
|---|---|
| Independent assays on file | 3 |
| Median measured purity | 99.8% |
| Certificates of analysis | Vendor states COAs are available |
| Vendor type | Research-use supplier |
| Last tested | 2026-04-14 |
This vendor advertises ≥98%. Across 3 independent Janoshik assays of its products, median measured purity is 99.8%, most recently 2026-04-14.
These details were read from Zjpeptix's own website on 2026-08-16. Pages consulted:
Zjpeptix is listed as active and we hold 3 independent Janoshik assays on file, median measured purity 99.8%. That is evidence about the batches that were tested or published, not a guarantee about the vial you receive.
Yes. We hold 3 third-party Janoshik assays for Zjpeptix, covering 3 substances, with a median measured purity of 99.8%. The most recent is dated 2026-04-14.
Zjpeptix accepts Cryptocurrency. Cryptocurrency is the only option, which means no chargeback protection if an order goes wrong.
Zjpeptix ships from United Kingdom and uses DHL and FedEx and UPS and EMS and TNT.
Tested substances: Ghk-cu 100mg, Tirzepatide 20mg, Retatrutide 20mg.
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Popular peptides: Semaglutide, Tirzepatide, Retatrutide, BPC-157, CJC-1295, Ipamorelin.
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