Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Informational only. Not medical advice.INFORMATIONAL PLATFORM ONLY — NOT MEDICAL ADVICE, DIAGNOSIS, OR TREATMENT
Testagen is a synthetic tetrapeptide (Lys-Glu-Asp-Gly / KEDG) from the Khavinson bioregulator series, claimed to target testicular tissue. Not FDA-approved. Evidence base is extremely thin, with essentially no independently replicated or peer-reviewed support for the advertised reproductive or endocrine benefits in humans.
Lowest Price
$39.99
Highest Price
$89.00
Average Price
$64.38
Potential Savings
55%
across 13 options
5 of 13 vendors are lab-verified for Testagen
We cross-check each vendor's Certificate of Analysis against the issuing lab's own verification portal — so “cheapest” isn't the only signal.
Best price trend
Lowest $/mg for Testagen · last 45 days
$1.78/mg
flat
Trust grade first, cheapest within grade
vial · 20mgglacieraminos.shop· price updated today
Lot TST20GA-02· tested 2026-03-26
$3.40/mg
48% more per mg
vial · 20mgorosresearch.com· price updated today
$2.75/mg
35% more per mg
vial · 50mgskyepeptides.com· price updated today
Lot TGN26-50-001· tested 2026-03-05
$1.78/mg
vial · 20mgverifiedpeptides.com· price updated today
Lot 09-25-0120A· tested 2025-08-14
$2.75/mg
35% more per mg
vial · 20mgbiolongevitylabs.com· price updated today
Lot 43-3-46035· tested 2026-02-06
$4.00/mg
55% more per mg
vial · 20mgkimerachems.co· price updated today
Lot KC-TTG-RED1· tested 2026-03-13
$3.60/mg
51% more per mg
vial · 20mgpeptidetech.co· price updated 2d ago
Lot TSG-8470· tested 2026-03-15
$2.00/mg
11% more per mg
vial · 25mgpeptidecrafters.com· price updated 2d ago
$2.20/mg
19% more per mg
vial · 20mgcorepeptides.com· price updated today
$3.15/mg
43% more per mg
vial · 20mgplatinumlionpeptides.com· price updated today
$75.00−13%
$64.99$3.25/mg
45% more per mg
vial · 20mggeneticpeptide.com· price updated today
$95.00−32%
$65.00$3.25/mg
45% more per mg
vial · 20mgsolutionpeptides.net· price updated today
$3.25/mg
45% more per mg
vial · 20mgatomiklabz.com· price updated today
$3.25/mg
45% more per mg
Check formulation: Lyophilized powder requires reconstitution before use. Pre-mixed solutions are more convenient but may have a shorter shelf life and higher prices.
Compare per-mg cost: Different strengths and quantities make direct price comparison difficult. Calculate the per-milligram cost to find the true best value.
Verify COAs: Look for vendors that publish per-batch Certificates of Analysis from named, accredited labs. Every vendor on this page is verified for endotoxin testing — not just HPLC purity.
Evidence is extremely limited. Fedoreyeva et al. (Biochemistry [Moscow], 2011; PMID 22117547) — from Khavinson-group collaborators — showed that fluorescently labeled Lys-Glu-Asp-Gly (testagen) penetrated HeLa-cell cytoplasm and nucleus and bound CAG-containing deoxyribooligonucleotides in vitro. No replicated Leydig-cell, animal, or human clinical-trial data has been published in indexed peer-reviewed literature. Reproductive or steroidogenic benefits in humans have not been demonstrated.
This platform provides informational tools only, not medical advice.
Prices verified as of June 2026. Actual prices may vary. For research use only.
Prices are estimates and may vary. For research use only. We may earn a commission on purchases through affiliate links. Not medical advice.
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