Testagen 20 mg

Testagen for research: identity and specifications

Testagen is a short synthetic peptide bioregulator of the Khavinson class, a tetrapeptide with the sequence Lys-Glu-Asp-Gly (KEDG), originally described from analysis of testicular tissue extracts by the research group of Prof. Vladimir Khavinson. Supplied as a 20 mg vial of lyophilized powder, with no fillers, carriers or excipients, at ≥98% purity by HPLC.

Scientific background

Short peptides of this class are investigated for a hypothesized ability to interact with DNA and to modulate gene expression in a tissue-specific way. In experimental models, Testagen is examined in work on testicular cell signaling and on transcription-factor activity related to hormonal pathways.

The literature is largely preclinical and in vitro, and the compound is used in basic studies of peptide bioregulators, cell signaling and tissue aging, always under controlled bench conditions and without extrapolating results to human or veterinary use.

• Khavinson-class short peptide bioregulators in cell culture
• Testicular cell signaling in experimental models
• Transcription-factor activity in hormonal pathways
• Peptide-DNA interaction hypotheses in vitro

Technical specifications

Analytical quality and chain of custody

Every lot of Testagen is synthesized in registered facilities, with independent analytical verification by third-party laboratories and full chain-of-custody documentation. The certificate of analysis (COA) for each lot can be reviewed before purchase, recording HPLC purity and the other quality-control parameters used to release the material.

Reconstitution and laboratory handling

As a bench procedure, the lyophilized vial is reconstituted with a known volume of a suitable solvent, added along the inner wall of the vial, followed by gentle swirling until fully dissolved, without vigorous shaking. The reconstituted solution should be kept refrigerated and protected from light, and used in controlled assays within the stability period validated by the laboratory. Handling must be performed only by qualified personnel, in a bench environment suitable for in vitro experimentation, with lot number and storage conditions documented according to good laboratory practice.

Frequently asked questions

What is the purity of the Testagen supplied?

≥98% by HPLC, with the lot-specific value reported on the certificate of analysis (COA).

What is the sequence of Testagen?

Testagen is the tetrapeptide Lys-Glu-Asp-Gly (KEDG), a short peptide bioregulator of the Khavinson class. The lot COA documents its identity and purity.

How should the compound be stored?

At -20 °C, protected from light and moisture, as a lyophilized powder until reconstitution.

Does the certificate of analysis come with the lot?

Yes, every lot has a matching COA that can be verified before purchase using the button on this page.

Who can purchase Testagen?

Sales are restricted to qualified researchers and institutions, for laboratory use only, as detailed in the research-use-only notice on this page.

See the peptide reference guide and the page on how every lot is tested by HPLC and COA.

Research use only (RUO). This material is supplied for in vitro laboratory research only. It is not a drug, dietary supplement or cosmetic, and it is not intended for human or veterinary use, or for the diagnosis or treatment of any condition. Sales are restricted to researchers and institutions.