Testagen 20 mg

What is Testagen?

Testagen is the tetrapeptide lysyl-glutamyl-aspartyl-glycine from the Khavinson bioregulator series, studied in endocrine research models. Pepstral supplies it as a lyophilized powder for in-vitro laboratory research only.

→Read the full Testagen research guide

What is Testagen studied for?

• Endocrine tissue research models
• Short-peptide bioregulator comparisons
• Gene-expression studies
• Ageing-model research

All applications above are in-vitro or preclinical research contexts. Testagen is sold for laboratory research only and is not for human or animal use.

What does the certificate for lot TESTA20-0528 show?

Every lot of Testagen is tested by an independent US laboratory before it is listed. The report for lot TESTA20-0528 is in the COA library and the lot number printed on the vial matches it. The current results:

How is Testagen handled and stored?

Sealed vials are stored at -20°C away from light and keep for 24 months. To reconstitute, add bacteriostatic water slowly down the inside wall of the vial and swirl until clear; never shake. Once in solution, keep at 2 to 8°C and use within our 28-day default for a preserved solution. The concentration table gives the dilution volumes and microlitre aliquots for this vial.

Frequently asked questions

Related reading

• Testagen (Lys-Glu-Asp-Gly): the sequence, the certificate for lot TESTA20-0528, and what the mass provesTestagen is Lys-Glu-Asp-Gly, mass 447.4. Lot TESTA20-0528 line by line, how the mass confirms the sequence, micromoles in 20 mg, and the literature.
• Prostamax, Vesugen and the short bioregulators: certificates you can check with a calculatorShort peptide bioregulators are two to four residues. Their molecular weights can be calculated by hand, which makes the certificate independently checkable.
• Pinealon, Vilon, Vesugen, Testagen, Prostamax and Thymalin compared: sequences, masses and lotsFive Khavinson peptides differ by one or two residues; the sixth is an extract. Sequences, masses and certificate figures, side by side.
• Which residues degrade first: a map of peptide breakdown chemistry, and what it says about this catalogueSix degradation routes, each tied to one residue. Across 13 catalogue sequences the dominant route is not the one textbooks lead with.