PICKING A PEPTIDE vendor in Canada can feel a bit like buying a used car. Every seller swears theirs is the cleanest, but how far those claims go can only be verified by documents. So for this Researched Peptides review, I went straight to the COAs.
I opened the posted COA PDFs, checked who signed them, and lined the numbers up against the vendor’s “99%+ purity” claim. The results were spot on!
The reports were signed by Testides, an independent lab, and the Retatrutide batch I checked confirmed 99.79% purity by HPLC. I also went through the shipping policy, the refund terms and the full catalogue, so you’ll know what to expect before your first order.
Note: Researched Peptides sells everything strictly for laboratory and scientific research.
Researched Peptides is a Vancouver-based online shop selling lyophilized research peptides to labs and independent researchers across Canada.
The site doesn’t list a founding year or name its team, so you won’t find a long origin story. What you do get is a lot of documentation. There’s a Lab Results page, a step-by-step reconstitution SOP, a storage data sheet and a free peptide calculator.
Its stance on use stays consistent everywhere you look. Products are sold for laboratory and scientific research only, and the site puts the responsibility for lab safety and local rules on the researcher. For a shop without a long public history, the steady paper trail does most of the trust-building.
The Researched Peptides catalogue is small and focused: 14 compounds, all sold as lyophilized (freeze-dried) powder in sealed vials.
| Compound | Listed vial size | Full COA PDF posted? |
| Retatrutide | 10 mg, 20 mg | Yes |
| Tirzepatide | 10 mg, plus other sizes | Yes |
| Semaglutide | 5 mg, plus other sizes | Yes |
| BPC-157 | 10 mg, plus other sizes | Yes |
| TB-500 | 10 mg, plus other sizes | Yes |
| Wolverine Blend (BPC-157/TB-500) | Blend | Yes |
| GHK-Cu | 50 mg | Yes |
| MOTS-c | 20 mg | Yes |
| CJC-1295 (No DAC) | 10 mg, plus other sizes | Yes |
| Ipamorelin | 5 mg | Yes |
| Melanotan II | 10 mg | Yes |
| NAD+ | 500 mg | Yes |
| KLOW | 80 mg | Yes |
| GLOW | 70 mg | Yes |
Retatrutide (LY3437943), or “reta” as most of the peptide crowd calls it, is the star of the shelf. The product listing describes it as a triple GIP/GLP-1/glucagon receptor agonist, a 39-amino-acid peptide used in metabolic and energy-expenditure research models. It also lists the molecular formula, the CAS number (2381089-83-2) and the full sequence, which is handy for matching it against your protocol.
Every vial arrives as a dry white “cake” of powder. You recon it with bacteriostatic water, which the shop sells at $12.99 for a 10 mL vial.
Purity and Third-Party Testing: The Core Differentiator
Researched Peptides posts lab reports you can download from an independent lab and confirms purity numbers with standard test methods like HPLC. Numbers for most of the batches exceed 99%.
Who Tests the Batches
The Lab Results page credits an independent testing lab. Open the Retatrutide report, and it’s stamped “Certified by Testides.” Stuart Phillips, a kinesiology professor at McMaster University, points out that many certificates in this market are issued by the vendors themselves, so one signed by an independent lab is a good exception.
What the Posted COAs Show
Six products have full COA PDFs, and they range from 98.81% to 99.94% purity on HPLC. MOTS-c (99.94%) and Retatrutide (99.79%) sit at the top. BPC-157 (98.81%) and TB-500 (98.99%) land a hair under 99%, though TB-500 still cleared its report’s 98% spec.
The Retatrutide report also shows 12.59 mg in a 10 mg vial and an endotoxin result under 0.125 EU/mL, marked PASS. Though it doesn’t carry an online verification key, ask support if you need the OG report from the lab itself.
How to Read a Researched Peptides COA
Follow these steps.
Why 99%+ Matters for In-Vitro Work
In cell and bench work, impurities are the unknowns. Truncated or missing-sequence fragments can bind where you don’t expect, and endotoxin can trigger immune responses in cell cultures. Higher documented purity means fewer variables you didn’t plan for.
Researched Peptides ships every order from Vancouver by Canada Post Xpresspost, usually the next business day. Most parcels arrive in about two business days, and your order never crosses a border.
Your parcel stays with Canada Post from Vancouver to your door, so customs never enters the picture. Free Xpresspost kicks in at $199.
Researched Peptides prices everything in Canadian dollars. Regular single-vial prices start at $54.99 for BPC-157, TB-500 or Melanotan II and run up to $189.99 for KLOW. A few regular prices show how the value stacks up per milligram:
The best per-milligram value sits in the bigger vials, so it pays to size up if your study runs long. Part of what you’re paying for is the paperwork and the domestic shipping. For context, a couple of Canadian suppliers set their free-shipping bar at $300. Researched Peptides starts free Xpresspost at $199, which a two-vial order can easily hit.
If you’re planning a larger purchase, email support to discuss available options. You can also join the email list, which promises early access to new peptides and promos.
Every vendor has trade-offs. Here’s how Researched Peptides shakes out: its policies and the posted lab reports.
Pros
Cons
So, is Researched Peptides worth it? For Canadian researchers who put documented purity first and want to keep cross-border customs out of the picture, it’s an easy one to recommend.
The big draw is the paper trail. You get real PDFs, a named lab, exact figures, and a brand willing to tell you not to round 98.99% up. Add next-business-day dispatch from Vancouver and free Xpresspost at $199, and the basics are well covered.
The trade-offs are small and easy to work around. The shelf is tighter than what the big US shops carry.
Starting with the flagship? You can check vial sizes, molecular data and lab results on the Retatrutide research peptide page before ordering. Run every order through a named lab, a matching batch and an exact figure. On the compounds with full reports posted, this Vancouver shop clears the lab and exact-figure checks, and the batch match is a quick look at your own vial.
Is Researched Peptides legit?
Researched Peptides runs a working Canadian storefront out of Vancouver, posts downloadable COAs signed by Testides, and publishes clear shipping and refund policies. There’s no founding year or team listed, so the lab reports carry most of the trust. On products with full PDFs, the paperwork checks out.
What is their return policy?
All sales are final once an order ships, so returns and exchanges aren’t accepted. For a damaged or wrong item, email support within 48 hours of delivery with your order number and photos of the unopened product and packaging. Approved claims get a replacement.
Do they ship across Canada?
Yes. Every order ships from Vancouver by Canada Post Xpresspost with tracking. B.C. orders can arrive next day, and most provinces see delivery in about two business days. Shipping is free over $199, and orders over $200 need a signature.
How do I verify their COA?
Download the PDF for your compound from the Lab Results page. Check that Testides is named, the product and vial size match your order, and purity shows as an exact figure. Missing your batch? Email support and ask for its report.
Are their peptides safe for human use?
Researched Peptides sells its products for laboratory and scientific research only, and they aren’t intended for human consumption. The site states this on its product pages and policies. Researchers are responsible for following the laws and lab safety rules that apply to their work.
Disclaimer: Every product mentioned in this review is sold for laboratory and scientific research and is not for human consumption. Nothing in this article is medical advice.
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