Best Cortagen Sources
4 US vendors carry Cortagen. Ordered below by the lab-rule score of each vendor’s certificate for Cortagen, then by the vendor’s published score; prices are per milligram. Short peptide bioregulator from the Russian Khavinson research programme, named for cortical tissue. Sold for laboratory research use only.
- Vendors
- 4
Vendors
- With COAs
- 1
With COAs
- Best $/mg
- $2.30
Best $/mg
Every Cortagen source, by certificate
Ordered by the lab-rule score of each vendor's certificate for this product (out of 10), then by the vendor's published score, then alphabetically. How the lab rule scores a certificate. For the market-wide picture, see our 2026 study of peptide vendor testing.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
Vendor score 7.24/10Strong
- Price per mg
- $3.50
- Best price
- $69.97 / 20mg
Vendor score 5.95/10Fair
- Price per mg
- $2.30
- Best price
- $46.00 / 20mg
Vendor score 5.39/10Weak
- Price per mg
- $2.35
- Best price
- $46.95 / 20mg
Vendor score 2.13/10Poor
- Price per mg
- —
- Best price
- —
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Affiliate partners carrying Cortagen
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
Top partner pick
The highest-placed affiliate partner in the table above for Cortagen (certificate 8.5/10, vendor score 7.24/10), and also the partner with the largest reader code on it (code PSR).
BioLongevity Labs discount code →Cortagen: Frequently Asked Questions
Who has the best Cortagen?
In our 2026 audit, BioLongevity Labs is listed first for Cortagen: its certificate for Cortagen scores 8.5/10 on our lab rule, and its published vendor score is 7.24/10. The full ordered table is on this page.
What is the cheapest Cortagen per mg?
The lowest recorded price per milligram for Cortagen in our audit is the "Best $/mg" figure at the top of this page, and every carrier's price per mg is in the table. Cheapest is not the same as best: the table is ordered by certificate and vendor score, not by price.
How do you rate Cortagen vendors?
Ordered by the lab-rule score of each vendor's certificate for this product (out of 10), then by the vendor's published score, then alphabetically. The certificate score is the same lab rule that builds each vendor's lab sub-score, applied to that vendor's certificate for Cortagen; the vendor score is the published overall score. Price per mg is shown but does not change the order. See our methodology for the lab rule.