Cortagen
19 vendors · 1 size · $1.65–$5.00 per mg at 20mg · observed Sep 1–Sep 18
2 of the 19 sellers we assessed publish a certificate for the batch they ship.
"Third-party tested" is a claim about who tested it. A certificate you can open is a document. Only the second is counted here.
At 20mg
How this is ordered Grouped by what each seller publishes about testing, strongest first, and cheapest first inside every group. Nobody is left out — the cheapest sellers on this page are in the last group. Sort by price instead →
Shows you a certificate for the batch COA 1 of 14 sellers we read
The listing publishes a test certificate, or promises one per batch. This is the only group where a document exists to open.
| Vendor | Price | Per mg | |
|---|---|---|---|
| Puregenixpeptides Sep 18 | $50.00 | $2.50 | visit |
Says it was tested — names nobody tested 2 of 14 sellers we read
A claim about method — "HPLC", "lab tested" — naming no laboratory and showing no document.
Nothing about testing in the listing none 11 of 14 sellers we read
We found no mention of testing on the page we read. That is a fact about this listing and not about the seller — they may publish certificates somewhere we have not looked.
| Vendor | Price | Per mg | |
|---|---|---|---|
| Research1peptides Sep 18 | $40.00 | $2.00 | visit |
| Aminousa Sep 17 | $50.00 | $2.50 | visit |
| Atomixresearch Sep 17 | $54.99 | $2.75 | visit |
| Peptides4research Sep 18 | $55.00 | $2.75 | visit |
| Verifiedpeptides Sep 18 | $55.00 | $2.75 | visit |
| Core Peptides Sep 16 | $59.00 | $2.95 | visit |
| Erospeptides Sep 17 | $59.99 | $3.00 | visit |
| Atomiklabz Sep 17 | $60.00 | $3.00 | visit |
| Canlabintl Sep 17 | $60.00 | $3.00 | visit |
| Solutionpeptides Sep 18 | $60.00 | $3.00 | visit |
| Health Tides Sep 17 | $100.00 | $5.00 | visit |
Not read yet
We have not read these listings for test results. Their absence from the groups above says nothing about them.
Withheld from this comparison: 1 seller publishing in another currency. We publish only prices we read in US dollars, and we convert nothing.
Sellers of Cortagen also list
Want to be told when Cortagen moves? Watch this price → We haven't started sending these yet — this is us finding out whether anybody wants them.