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Testagen 20mg research peptide vial — Testicular Peptide Bioregulator

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Gonadal

Testagen

Testicular Peptide Bioregulator

Testagen is the tripeptide Lys-Glu-Asp (KED), molecular weight approximately 390 Da, originally derived from research on bovine testicular tissue extracts and described as the testicular-specific member of the Khavinson bioregulator series.

One fact matters more than any other when evaluating Testagen: its KED sequence is identical to that of Vesugen, the vascular endothelial bioregulator from the same series. Testagen and Vesugen are the same molecule marketed for different target tissues, which the research literature treats as a significant open question for the organ-specificity hypothesis that underpins the entire compound class. Anyone comparing the two is comparing labels and intended research context, not chemistry. KED is likewise the core extended by Livagen (KEDA), Pancreagen (KEDW), and Prostamax (KEDP). Cell-based studies examine testicular-cell function, steroidogenesis-related signaling, and gonadal gene expression.

Supplied as a lyophilized 10-vial 20mg kit for in vitro research use only.

$395
1
$395
per 10-vial kit
$1.98 / mg
Research Library
Testagen Research Review →
Mechanism, evidence level & in vitro context
CategoryBioregulators
SequenceLys-Glu-Asp
Purity◆ ≥99%
FormLyophilized powder
Kit size10 vials
Per vial20mg
Storage−20°C recommended
UseResearch only
Certificate of Analysis
Available upon request. Custom and large batch orders include a batch-specific COA.
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⚠ For in vitro research use only. Not for human or animal consumption. Not evaluated by the FDA. Read full disclaimer →
Common Questions

Testagen FAQ

What is Testagen?+
Testagen is a Testicular Peptide Bioregulator supplied for laboratory research. Gonadal bioregulator studied in vitro for testicular cell function pathway modeling and testosterone biosynthesis signaling mechanism research.
What tissue does the Testagen bioregulator target?+
Testagen (Lys-Glu-Asp) is a peptide bioregulator based on testicular and gonadal tissue, studied for testicular cell function and testosterone-biosynthesis signaling.
Why do Testagen and Vesugen have the same sequence?+
Both are the tripeptide Lys-Glu-Asp (KED), roughly 390 Da, so they are chemically the same molecule described for different tissues: Testagen for testicular tissue and Vesugen for vascular endothelium. This identity is a recognized open question for the organ-specificity hypothesis that underpins the peptide bioregulator class, and it is worth knowing when comparing the two products.
What is lyophilized Testagen, and how is it reconstituted?+
Testagen is supplied as a lyophilized (freeze-dried) powder, a dehydrated form that keeps the peptide stable during shipping and storage. In the laboratory it is reconstituted (returned to liquid form) using a solvent such as bacteriostatic water, added slowly against the side of the vial, which is then swirled gently, never shaken, until the powder fully dissolves. All handling is for in vitro research use only.
How should Testagen be stored?+
Store the lyophilized Testagen powder at -20°C, protected from light and moisture, where it remains stable long-term. Once reconstituted, keep it refrigerated (2-8°C) and use it within the timeframe appropriate for your research protocol.
What is the purity of Testagen, and how is it tested?+
Every batch of Testagen is produced to a purity of 99% or higher. Purity and molecular identity are verified using standard analytical methods: high-performance liquid chromatography (HPLC) to measure purity, and mass spectrometry (MS) to confirm the peptide's molecular weight.
Same Category

Related Compounds

Vascular
Vesugen
Vascular Peptide Bioregulator
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 Urogenital
Prostamax
Prostate Peptide Bioregulator
$395
 Pancreatic
Pancreagen
Pancreatic Peptide Bioregulator
$395