Canadian research peptides · independently tested
244 independent lab reports and a published purity floor of 93.844%, from the most documented peptide source in Canada. Ships domestically.
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Growth Guys retatrutide — last verified at checkout at Growth Guys (growthguys.com): October 27, 2026 (today), 01:55 ET — HEALTHYLIFE10 applied and working, taking $5.00 CAD off a $50.00 CAD cart, exactly 10% off sitewide, with no minimum purchase and no product exclusions; 3 live-cart checks so far today.
A vendor-wide average tells you nothing about the vial in your hand, because reports are per batch and coverage across a catalogue is uneven. The only figure that describes your item is the one filed against its own batch number.
| Cart subtotal | Discount | Paid | Rate |
|---|---|---|---|
| $80.00 CAD | −$8.00 CAD | $72.00 CAD | 10.0% |
| $50.00 CAD | −$5.00 CAD | $45.00 CAD | 10.0% |
| $150.00 CAD | −$15.00 CAD | $135.00 CAD | 10.0% |
| $50.00 CAD | −$5.00 CAD | $45.00 CAD | 10.0% |
| $120.00 CAD | −$12.00 CAD | $108.00 CAD | 10.0% |
| $80.00 CAD | −$8.00 CAD | $72.00 CAD | 10.0% |
Each line is an independent cart from October 27, 2026. The values move between runs because a code that works at $90 and not at $400 should be visible as such. Everything is read at the guest-cart stage — no order placed, no payment information entered.
At the cart stage, type HEALTHYLIFE10 into the discount field and confirm the total changed before moving on. It applies to guest carts, needs no account, and can be used again on a second order exactly as it was on the first.
Across 133 distinct products Growth Guys has put 244 Janoshik reports on the record. 181 of them state a purity figure; those average 99.03%, with the lowest kept published at 93.844% and the highest at 99.99%. Keeping the low results visible is the part that makes the average mean anything. Domestic shipping within Canada, CAD pricing, no customs step. The full distribution.
Published testing records are assembled batch by batch, and a set covering 244 reports across 133 distinct products is not uniform across those products. A headline average is a property of the set, not of any particular item in it.
So the useful question is never what a vendor averages. It is whether the specific batch you are holding has a document, and what that document actually measured. Those are answerable; the average is not an answer to either.
The batch or lot identifier is printed on the packaging. Take that identifier to the testing laboratory's own portal rather than to a page the seller controls, because a document hosted by the seller is a document the seller can edit.
In the Growth Guys set the reports resolve on Janoshik Analytical's portal, which is the structural property worth caring about: it requires a third party to cooperate. If a batch identifier does not resolve anywhere independent, treat that as the finding and act on it.
Read the assay headings first. A purity assay reports the proportion of stated compound and is usually run by chromatography; it is not a sterility result and not an endotoxin result, and treating a high purity figure as either is the most common misreading in this subject.
If an assay you care about is not present, the honest conclusion is that this batch was not tested for it. That is different from a result obtained and withheld, and different again from a failure. An absent assay is a gap you decide whether to carry.
Of the 181 reports carrying a purity figure, the average is 99.03 percent, 33 fall below ninety-eight percent, and the lowest is 93.844. Those low numbers are the most load-bearing part of the record.
A published set containing nothing unflattering is consistent both with uniformly good material and with selective publication, and nothing inside the set separates them. A set that carries its own poor results is behaving like one published as the results arrive.
Nothing here addresses dosing, protocols, administration, storage for use, or what any compound does in a body. Those questions have no answer we could publish and verify, and a page that drifted into them would be trading away the one thing it is good for.
What is checkable is the document trail, and that is the whole subject here. On price, HEALTHYLIFE10 applies 10% off sitewide at growthguys.com with no minimum purchase and no product exclusions, including the highest-priced items — a commercial fact that says nothing about any assay. Research use only, and not medical advice.
Yes. Checked October 27, 2026 against a real $50.00 CAD cart, where it took $5.00 CAD off — 10% precisely. The check repeats daily and this page is rewritten from whatever it returns.
No. Reports are filed per batch, and coverage across a catalogue is uneven. Only the document filed against your own batch number describes your item.
That is a real finding. It means the independent record does not cover the item you are holding, which is the situation the batch identifier exists to rule out.
No. Purity and sterility are different assays. A report carrying one does not carry the other, and the headings are what tell you which was run.