99% Purity.Published COA.Check Every Batch Yourself.
Every batch has a Janoshik third-party COA, published on our site and matched to the batch number printed on your vial. 10,000+ researchers across 50+ countries already trust us. Free worldwide shipping, no minimum order.
40% of Peptide Vendors
Fail Their Own Purity Claims.
Finnrick, an independent testing organisation that publishes vendor-level results, has run close to 10,000 tests across 256+ vendors and reports roughly 40 percent failing their stated purity. Vials labelled 99% have come back at 75%. Peptide Sciences, a name most researchers trusted, shut down in March 2026 amid regulatory enforcement and exposed quality failures. A label costs nothing. A third-party lab report costs real money. Most vendors pick the label.
40%
of vendors fail their stated purity in independent testing (Finnrick, ~10,000 tests, Aug 2026)
75%
lowest verified purity found in vials labeled "99%" pure
$0
refund when a vendor ships the wrong compound and stops answering
Three Vendors.Same Compound. Very Different Prices.
Retatrutide 5mg vials, compared side by side. Here's what each one actually gets you.
Chinese Budget Suppliers
per vial
You never know what's in the vial.
Premium US Resellers
per vial
Paying for the middleman. Not the molecule.
What You Actually Pay
Same molecule. Same purity spec. Minus the 5x reseller markup.
1 Kit
10 × 5mg vials
$365
$36.50/vial
2 Kits
20 × 5mg vials
$640
$32/vial
5 Kits
50 × 5mg vials
$1,350
$27/vial
"This isn't a sale. No coupon code. It's just what peptides cost when you buy from the same labs the US resellers use, without the 5x markup."
The Full Comparison
Here's exactly what you get from each vendor type.
| Feature | Chinese Suppliers | Lyze Labs | US Premium |
|---|---|---|---|
| Price/Kit | $8-15 | $30-150 | $150-500 |
| HPLC Testing | None | Every Batch | Most |
| Public COA | No | Yes | On Request |
| Free Shipping | No ($15-30) | Worldwide | No ($15-30) |
| Support | Minimal | 24/7 WhatsApp | Email Only |
| Delivery | 14-21 days | 7-14 days | 2-5 days |
What Pharmaceutical Grade Actually Means
Three non-negotiable standards. Every order, every time.
Third-Party HPLC Analysis
Every batch gets tested at Janoshik, an independent lab the peptide community actually recognizes. The COA is published on our site, matched to the batch number printed on your vial. You check it yourself.
Certificate of Analysis for Every Batch
Your COA documents compound identity, purity percentage, and molecular weight confirmation for the exact batch in your hand, released by our own QC laboratory and confirmed independently. Never in-house alone. No recycled reports. No photoshopped numbers.
Sterile Lyophilized Vials
Freeze-dried under nitrogen, 24+ months shelf life. Cold-chain packaging from the synthesis lab to your door. The same standards the big Western resellers use, because they source from the same place.
4.8 Stars. 10,000+ Researchers.
University labs, independent researchers, and clinical teams across 50+ countries.
"We've tested multiple suppliers. The CoA matched our independent HPLC analysis perfectly. That alone puts them ahead of most vendors we've used."
"Three papers published using their peptides so far. Purity is consistent every order. WhatsApp support actually answers in minutes, not days."
"Six months in. Every batch has arrived on time with a COA matching the vial. That's more than I can say for the last two vendors I used."
Ready to Place Your Order?
100+ compounds in stock. 8-tier volume discounts. Free worldwide shipping. Every batch's Janoshik COA is published on our lab results page. Order via WhatsApp so you can ask a real person anything before you pay.
Research use only. Not for human or animal consumption. LyzeLabs supplies qualified researchers and institutions.