Modern AminosLowest
via 20 mg, $54.00 list
$2.70per mg landed
No price history yet.
7 vendors sell Testagen. The most common size, 20 mg, costs $54.00–$65.00 across 6 of them as of Oct 14, 2026; the cheapest is Modern Aminos at $54.00.
Every vendor's price per mg, side by side. Prices include the sales and codes shown. Buy links may earn us a commission.
Also known as: Lys-Glu-Asp-Gly
| Vendor | Size | Price | $/mg | Buy |
|---|---|---|---|---|
| Modern Aminos 20 mg | 20 mg | $54.00 | $2.70 | Buy → |
| Swiss Chems 20 mg | 20 mg | $59.95 | $3.00 | Buy → |
| peptides.gg 20 mg | 20 mg | $60.00 | $3.00 | Buy → |
| Core Peptides 20 mg | 20 mg | $63.00 | $3.15 | Buy → |
| Atomik Labz 20 mg | 20 mg | $65.00 | $3.25 | Buy → |
| Solution Peptides 20 mg | 20 mg | $65.00 | $3.25 | Buy → |
| BioLongevity Labs stock not verified 20 mg | 20 mg | $79.97 | $4.00 | Buy → |
| LA Peptides 5 mg | 5 mg | $53.99 after sales and codes, was | $10.80 | Buy → |
Testagen is the tetrapeptide Lys-Glu-Asp-Gly, one of Vladimir Khavinson's short bioregulator peptides.
Testagen is a four-amino-acid peptide, Lys-Glu-Asp-Gly, written KEDG in one-letter code. It belongs to the same family of short bioregulator peptides as Epithalon and Cartalax, which we group under Bioregulators. Vendors sell it research-use-only as a lyophilized powder, usually in 20 mg vials.
Most Testagen listings use the same 20 mg vial, so headline prices compare fairly well. The table above divides price plus a shipping estimate by the milligrams in each vial, which keeps multi-vial packs and any smaller sizes in line.
Testagen differs from Epithalon (Ala-Glu-Asp-Gly) by a single residue, and from Livagen (KEDA) by its last one, so the codes are easy to mix up. Confirm the compound on the label before ordering.
Also in Bioregulators.