Testagen vendor rankings, purity, and price
Independent lab results for Testagen, updated daily. No vendor can pay to rank higher.
Vendors carrying it
5
Median purity
99.8%
Price range
$2.70–$4.00/mg
Newest test
Apr 28, 2026
Testagen vendors ranked by PVS
PVS is a 0–100 score from lab results, published COAs, and community reports — How we score it.
Best evidence + price: Core Peptides — Highest PVS with a listed price, at least one lab result, and no price flag.
| # | Vendor | PVS | Purity | Price | Independent results |
|---|---|---|---|---|---|
| 1 | Verified Peptides | 59 Poor | 99.8% | Price not listed | 2 |
| 2 | Modern Aminos | 55 Poor | No purity on file | $2.70/mg | None |
| 3 | Core Peptides | 46 Poor | 99.8% | $3.15/mg | 1 |
| 4 | BioLongevity Labs | 43 Poor | 99.8% | $4.00/mg | 3 |
| 5 | Swiss Chems | 41 Poor | No purity on file | $3.00/mg | None |
Ranked by PVS, which no payment can change. Purity is the median of lab results for this compound. Vendor self-published PDFs don't count.
Testagen price per mg
Median is $3.07/mg. Vendors under half the median ($1.54/mg) with no COA in the last 12 months are flagged.
Source: Vendor storefronts.
Listed storefront price after any permanent public discount code. Listed price is not the price you will pay at checkout. No affiliate codes, no referral fees. See full price methodology
Testagen lab results
What to look for in Testagen
Impurity risks
HPLC measures relative purity but can't confirm identity. Truncated or co-eluting synthesis byproducts can inflate the number, so Testagen purity should come with a chromatogram showing one dominant peak.
Read more: HPLC vs Mass Spec: Peptide Purity Testing Methods ComparedCommon fake patterns
The same COA image reused across batches or peptides, "COA on request" only, missing lab details, and prices far below the market median.
Read more: How to Choose a Peptide Vendor: A Researcher's ChecklistWhat a real COA shows
Mass spec confirming Testagen's molecular weight within ±1 Da, HPLC purity of 98% or higher, the lab name and test date, and a batch number that matches your vial.
Read more: How to Read a Peptide Certificate of Analysis
Have a COA for Testagen? Check it against the lab results on file.
Related compounds
About Testagen
Testagen is a Khavinson-series bioregulator peptide studied in reproductive-tissue aging models.
For research purposes only. PepAssure publishes vendor verification data and does not endorse any use.