Testagen
otherTestagen is a research-use-only peptide. PeptideSource compares suppliers on purity, COAs, and price-per-mg.
Testagen works by modulating specific receptors involved in hormonal regulation. It is a synthetic peptide, not naturally occurring in the body, designed to mimic certain biological processes. Initial research interest in Testagen began as scientists explored hormonal imbalances and their effects on various physiological systems. This led to investigations into how Testagen could potentially address these issues. Today, it is primarily studied for its effects on:
- Hormonal regulation
- Endocrine system studies
- Metabolic function
- Reproductive health
- Hormone replacement therapies
Additionally, Testagen is being investigated for its role in supporting metabolic health.
PeptideSource editorial · Updated Jul 18, 2026
For research use only. PeptideSource does not sell peptides directly. Compare third-party supplier listings at your own discretion.
Compare suppliers
Size | |||||||
|---|---|---|---|---|---|---|---|
| Shop now | Shop | Shop | Shop | Shop | Shop | Shop | Shop |
| Product | Testagen | TESTAGEN | Testagen | Testagen | Testagen | Testagen Bioregulator | Testagen Bioregulator |
| Size | 50 mg | 20 mg | 20 mg | 20 mg | 20.2 mg | 20 mg | 20 mg |
| Price | $89.00 | $54.00 | $55.00 | $54.99 | $62.99 | $64.00 | $65.00 |
| Price/mg | $1.78/mg | $2.70/mg | $2.75/mg | $2.75/mg | $3.12/mg | $3.20/mg | $3.25/mg |
| Price change | 0% (10d) | 0% (10d) | 0% (16d) | 0% (10d) | 0% (16d) | 0% (10d) | 0% (10d) |
| Stock | Out of stock | In stock | In stock | In stock | In stock | In stock | In stock |
| Shipping | Same or next-day shipping | Same-day dispatch before 12PM CT | 2–5 days | UPS 2-Day | 5–7 days | Same-day dispatch before 12PM EST | Same/next-day dispatch |
| Reviews | 4.2(46) | 4.6(63) | 4.8(271) | 4.8(75) | 4.3(159) | 5.0(1) | 1.0(4) |
| Purity | — | — | 99.79% | 99% | — | — | 99% |
| COA | — | — | — | — | |||
| Bulk discount | — | 10% off (3+) | — | — | — | — | — |
