Best Testagen Sources
7 US vendors carry Testagen. Ordered below by the lab-rule score of each vendor’s certificate for Testagen, then by the vendor’s published score; prices are per milligram. Short peptide bioregulator from the Russian Khavinson research programme, named for testicular tissue. Sold for laboratory research use only.
- Vendors
- 7
Vendors
- With COAs
- 2
With COAs
- Best $/mg
- $1.95
Best $/mg
Looking for the top picks? Best Testagen vendors, ranked by PSR score →
Every Testagen 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 7.88/10Strong
- Price per mg
- $2.70
- Best price
- $54.00 / 20mg
Vendor score 7.24/10Strong
- Price per mg
- $4.00
- Best price
- $79.97 / 20mg
Vendor score 6.08/10Fair
- Price per mg
- $1.95
- Best price
- $39.00 / 20mg
Vendor score 5.95/10Fair
- Price per mg
- $2.50
- Best price
- $50.00 / 20mg
Vendor score 5.39/10Weak
- Price per mg
- $3.00
- Best price
- $59.95 / 20mg
Vendor score 4.39/10Weak
- Price per mg
- $2.50
- Best price
- $50.00 / 20mg
Vendor score 2.38/10Poor
- Price per mg
- —
- Best price
- —
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Affiliate partners carrying Testagen
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
Highest-placed partner
The highest-placed affiliate partner in the table above for Testagen: certificate 8.5/10, vendor score 7.24/10.
BioLongevity Labs discount code →Largest partner reader code
The largest reader discount among our affiliate partners carrying Testagen: 25% off with code PSR25.
Hello Stacks discount code →Testagen: Frequently Asked Questions
Who has the best Testagen?
In our 2026 audit, Modern Aminos is listed first for Testagen: its certificate for Testagen scores 9.0/10 on our lab rule, and its published vendor score is 7.88/10. The full ordered table is on this page.
What is the cheapest Testagen per mg?
The lowest recorded price per milligram for Testagen 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 Testagen 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 Testagen; 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.