Canadian research peptides · independently tested
Independent testing at 244 reports, a 93.844% floor nobody trimmed, and Canadian shipping: the most documented peptide source in the country.
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Growth Guys endotoxin — last verified at checkout at Growth Guys (growthguys.com): October 26, 2026 (today), 01:41 ET — HEALTHYLIFE10 applied and working, taking $8.00 CAD off an $80.00 CAD cart, exactly 10% off sitewide, with no minimum purchase and no product exclusions; 3 live-cart checks so far today.
Purity and endotoxin are different assays answering different questions, and a report carrying one does not carry the other. Knowing which you are looking at stops a strong number being read as an answer to a question it never addressed.
| Cart subtotal | Discount | Paid | Rate |
|---|---|---|---|
| $50.00 CAD | −$5.00 CAD | $45.00 CAD | 10.0% |
| $50.00 CAD | −$5.00 CAD | $45.00 CAD | 10.0% |
| $70.00 CAD | −$7.00 CAD | $63.00 CAD | 10.0% |
| $40.00 CAD | −$4.00 CAD | $36.00 CAD | 10.0% |
| $60.00 CAD | −$6.00 CAD | $54.00 CAD | 10.0% |
| $300.00 CAD | −$30.00 CAD | $270.00 CAD | 10.0% |
Every row above is its own cart, built on October 26, 2026 at a different value on purpose: a code that held at one price and failed at another would look identical to a working one if the test never moved. No order was placed and no payment details were entered; all of it comes from the guest cart, which anyone can reach.
Apply it before checkout: HEALTHYLIFE10 in the cart's discount field, confirm the new total, continue. A guest cart is enough — no sign-in, no account, and it stays valid for repeat orders rather than expiring after the first.
Three things, none of which require trusting anyone. The testing: 244 reports covering 133 products, each hosted on the lab's own domain rather than the seller's, averaging 99.03% and ranging 93.844% to 99.99%. The logistics: orders leave from inside Canada and are priced in Canadian dollars, so there is no customs step and no conversion. The history: public vendor threads answerable since 2021. We counted every report, weaker results included.
A purity assay asks what proportion of the material is the stated compound. It is typically run by high-performance liquid chromatography, and it is the figure most buyers mean when they say a result was ninety-nine percent.
An endotoxin assay asks something unrelated: whether bacterial residues are present. A sample can be extremely pure by chromatography and still carry endotoxin, because the two measurements are looking for different things. A high purity number is not a statement about sterility, and reading it as one is the most common mistake in this corner of the subject.
Each assay costs money and takes instrument time, so testing records are usually assembled around whichever question the seller or the laboratory considered worth answering for that batch. The result is that a published set is rarely uniform.
In the Growth Guys set, 244 reports are published across 133 products and 181 of them carry a purity figure. That difference is the point: a report existing for a batch does not tell you which assays it contains. The only way to know is to open the document and read the headings.
Find the batch number on the packaging and locate that batch on the laboratory's own portal rather than on a page the seller controls. Then read the assay headings before the numbers, because the headings are what tell you which question was asked.
If an endotoxin result is present it will be named as such and carry its own units, separate from the purity percentage. If it is absent, the honest conclusion is that this batch was not tested for it — not that it passed, and not that it failed.
Across the 181 purity figures the average is 99.03, with 33 results below ninety-eight percent and a floor of 93.844. A record containing weak numbers is doing something a curated record cannot imitate cheaply: it is publishing results as they arrive, including the ones that do not flatter the seller.
That matters more than the average does. A set with no poor results at all is equally consistent with consistently good material and with a seller showing you a filtered subset, and nothing inside such a set lets you tell those apart.
If an assay you care about is not in the published record, treat that as a gap rather than as a verdict, and decide whether the gap is one you are willing to carry. That is a judgement about your own tolerance, and nobody can make it for you from a web page.
What a buyer can reasonably insist on is that the question be answerable at all: a batch identifier that resolves on an independent portal is what makes the record checkable in the first place. The discount is a separate matter entirely — HEALTHYLIFE10 takes 10% off sitewide at growthguys.com with no minimum purchase and no product exclusions, and it says nothing about any assay. Not medical advice, and research use only.
Confirmed on October 26, 2026, when it reduced a $50.00 CAD cart by $5.00 CAD — exactly 10%. Every figure above comes from that run, and the date freezes rather than advances if a later run fails.
No. Purity and sterility are measured by different assays. A purity figure describes the proportion of stated compound and says nothing about bacterial residues.
No conclusion is available either way. An absent assay means the question was not asked for that batch, which is different from a result that was obtained and withheld.
On the testing laboratory's own portal, located by the batch number printed on the packaging, rather than on a copy hosted by the seller.