Shop by goal

Popular compounds

GHK-Cu

GLP1-RC-RT

Research resources

Testagen peptide: Metabolic / Longevity research guide

In short: Testagen (Lys-Glu-Asp-Gly / KEDG) is a synthetic tetrapeptide from the Khavinson short-peptide family, studied for nucleic-acid and histone binding and for pituitary-axis endpoints in bird models. It is studied in preclinical (cell and animal) research and is supplied strictly for laboratory use, not for human or clinical use.

Not medical advice. Testagen is a research compound. This guide does not provide dosing, diagnosis, therapy recommendations, or claims about effects in humans.

Testagen at a glance

Compound type

Research peptide

Research category

Metabolic / Longevity

Also known as

Testagen, KEDG, Lys-Glu-Asp-Gly, H-Lys-Glu-Asp-Gly-OH, lysyl-glutamyl-aspartyl-glycine, Khavinson KEDG tetrapeptide

Molecular weight

447.44 Da

Evidence context

Preclinical / research use only

Regulatory status

Not an approved medicine. Supplied as a research compound

Last reviewed

13 October 2026

What to know first

Compound Testagen Research class Metabolic / Longevity Available pack sizes 10 × 20 mg Storage Lyophilised powder: store in freezer (−20 °C). Reconstituted: refrigerate 1–6 °C, away from sunlight.

Details and limits sit in the sections below. Research use only. No unsupported scientific claims are added here.

What Testagen is

Testagen (Lys-Glu-Asp-Gly, "KEDG") is a four-residue synthetic peptide from the Khavinson bioregulator family, studied for nucleic-acid and histone binding and for pituitary-axis endpoints in bird models.

One-paragraph overview from our research datasheet. Still scientific, but faster to read than the full mechanism list below.

Testagen (Lys-Glu-Asp-Gly / KEDG) is a synthetic tetrapeptide from the Khavinson short-peptide family, studied for nucleic-acid and histone binding and for pituitary-axis endpoints in bird models.

Research contexts

Peer-reviewed papers discuss Testagen in specific lab settings. The points below reflect research questions, not health claims.

Research vs. personal use: Literature describes experiments in cells and animals. That is distinct from real-world use. Our products are for laboratory research only.

Typical study contexts

Mitochondrial stress, NAD+/redox biology and nutrient-sensing pathways.

Enzyme activity, gene expression or endurance-style animal readouts.

Synthetic Lys-Glu-Asp-Gly (KEDG) tetrapeptide from the Khavinson short-peptide lineage.

Studied for entry into HeLa cell nuclei and sequence-dependent binding to oligonucleotides.

Examined for binding to histone proteins in cell-free fluorescence assays.

Compared with Ala-Glu-Asp-Gly in pituitary-deprived bird models (thyroid and thymus endpoints).

Why Metabolic / Longevity research matters

Researchers study these compounds for mitochondrial function and cellular energy stress. Ageing and metabolic disease models are common.

Mechanisms (technical review)

Our datasheet lists mechanistic themes from preclinical work. These are research endpoints, not health claims.

Synthetic Lys-Glu-Asp-Gly (KEDG) tetrapeptide from the Khavinson short-peptide lineage

Studied for entry into HeLa cell nuclei and sequence-dependent binding to oligonucleotides

Examined for binding to histone proteins in cell-free fluorescence assays

Compared with Ala-Glu-Asp-Gly in pituitary-deprived bird models (thyroid and thymus endpoints)

Defined four-residue structure, usable as a reference peptide in comparative bioregulator work

Lab handling & preparation

Storage: Lyophilised powder: store in freezer (−20 °C). Reconstituted: refrigerate 1–6 °C, away from sunlight.. See the storage guide.

Published pharmacokinetic context: Laboratory research material. No human dosing exists for this compound and none is published or recommended here.

Purity check: Use the COA reading guide and the published Certificates of Analysis (no current certificate is listed for Testagen yet).

Common Questions People Are Asking

What is Testagen?

Testagen is the name used for the synthetic tetrapeptide Lys-Glu-Asp-Gly (KEDG) in reviews from the Khavinson group. It is a research peptide with a small preclinical record, supplied here as a lyophilised powder for laboratory use only.

Is Testagen a testis peptide?

The name and some review tables suggest so, but none of the primary studies cited on this page examines testis or Leydig-cell tissue. Its experiments are about nucleic-acid and histone binding and about thyroid and thymus endpoints in hypophysectomised birds. The testis link should be read as a classification, not as a finding.

How does Testagen relate to Epitalon?

Both are four-residue peptides that end in Asp-Gly. Testagen starts with lysine (Lys-Glu-Asp-Gly) and Epitalon with alanine (Ala-Glu-Asp-Gly). Early bird studies compared the two directly, and the binding studies tested them in the same assays.

Is there a Certificate of Analysis for Testagen?

Not yet. No independent analytical report has been published for this material, so no purity figure is quoted. If one is published it will appear on the product page and the COA page.

Is there human data on Testagen?

No human study of KEDG appears in the literature cited here. Testagen is sold strictly for in-vitro and preclinical research, not for human or veterinary use.

Is this page medical advice? Can I use Testagen for my health?

No, and no. This article is educational only. We do not provide dosing, medical recommendations, or health claims. Our products are sold strictly for laboratory research, not for personal use of any kind.

Where do I find Testagen specs, purity certificates and pricing?

Open the shop listing via “View product details.” There you will see concentration, purity grade, and available SKUs with current pricing. No current Certificate of Analysis is published for Testagen yet; published certificates are listed at /coa.

Related peptide guides

Other compounds researchers often read about alongside Testagen.

Epitalon: Metabolic / Longevity research guide

Pinealon: Metabolic / Longevity research guide

Cartalax: Metabolic / Longevity research guide

Vesugen: Metabolic / Longevity research guide

Continue Testagen research

Analytical evidence, comparisons and current research for this compound. Research use only.

Research area Cognitive & longevity research The neuropeptide and longevity research area - nootropic and geroprotective peptides and related compounds studied in cognition… Explore the research area →

Scientific sources & further reading

Primary literature and registries for Testagen, plus mainstream coverage of the peptide category. Research use only - not medical advice.

Databases & literature:

PubMed: peer-reviewed literature on Testagen

ClinicalTrials.gov: registered studies on Testagen

Testagen: Wikipedia (search)

Peptides in the news:

WebMD: consumer health reference

BBC News: Health

CNN Health: “Peptides: what to know about the wellness trend”

Sky News: “Can peptides make America healthy again?”

Sky News: “Inside the exploding US peptides craze” (video)

Sky News Australia: “Black market peptide trade explodes as influencers fuel uptick in use”

Sky News Australia: “Backyard peptide boom sparks alarm” (video)

Sky News Australia: “Oprah reveals struggle with shame of weight-loss drugs”

Ready to order? View full product specs

Access concentration, batch info, variants, and current pricing on our shop.

Also known as: Testagen, KEDG, Lys-Glu-Asp-Gly, H-Lys-Glu-Asp-Gly-OH, lysyl-glutamyl-aspartyl-glycine, Khavinson KEDG tetrapeptide

PRECISION. PURITY. PERFORMANCE.

Research peptides. Third-party Certificates of Analysis (Janoshik Analytical & Freedom Diagnostics) are published on the website. Supplied strictly for laboratory research use.

Shop

All research compounds

Price list

Where to buy peptides

Research