Peptide Companion
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Peptide Companion
single
Anti-Aging
Vial: 20 mg

Testagen (20 mg Vial)

Testagen is a synthetic tetrapeptide with the sequence Lys‑Glu‑Asp‑Gly (KEDG), an anterior pituitary‑derived bioregulator studied for its role in modulating endocrine function, particularly the pituitary–gonadal axis. Preclinical research indicates effects on thyroid hormone normalization and male reproductive hormone modulation. This educational protocol presents a once‑daily subcutaneous approach using a practical dilution for clear insulin‑syringe measurements.

Detailed protocol below.

Dosing Schedule
WeekDaily Dose (mcg)Units (per injection) (mL)
Weeks 1–2100 mcg (0.1 mg)1.5 units (0.015 mL)
Weeks 3–4150 mcg (0.15 mg)2.25 units (0.0225 mL)
Weeks 5–8200 mcg (0.2 mg)3 units (0.03 mL)
Weeks 9–12 (optional)250–300 mcg (0.25–0.3 mg)3.75–4.5 units (0.0375–0.045 mL)
Supplies Needed
  • •Peptide Vials (Testagen, 20 mg each):
  • •Insulin Syringes (30‑ or 50‑unit recommended for low‑volume accuracy):
  • •Bacteriostatic Water (10 mL bottles): Use ~3.0 mL per vial for reconstitution.
  • •Alcohol Swabs: One for the vial stopper + one for the injection site each day.
References

  • MDPI Molecules

    The Inhibitory Effect and Adsorption Properties of Testagen Peptide on Copper Surfaces (structural characterization)

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  • MDPI Molecules

    Peptide Regulation of Gene Expression: A Systematic Review (bioregulatory peptide mechanisms)

    View source

  • PubMed

    Effects of hypophyseal Lys‑Glu‑Asp‑Gly peptide on immunity, hemostasis, and thyroid function in hypophysectomized chickens

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  • PubMed

    Effects of Lys‑Glu‑Asp‑Gly peptide on hormonal activity and thyroid morphology in hypophysectomized mature and old birds

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  • GenScript

    Peptide Storage and Handling Guidelines (reconstitution and stability best practices)

    View source

  • JPT Peptide Technologies

    How Long Do Peptides Last? (stability and storage considerations)

    View source

  • CDC

    Vaccine Administration: Subcutaneous Injection Technique (angle, site, no aspiration)

    View source

  • MedlinePlus

    Subcutaneous (SQ) Injections: Patient Instructions (site rotation and technique)

    View source

  • PMC

    Subcutaneous Drug Delivery: Pharmacologic Considerations and Clinical Practice

    View source

  • PMC

    Subcutaneous Injection Route: Pharmacokinetics and Clinical Applications Review

    View source

  • NCBI Bookshelf

    Best Practices for Injection (asepsis, preparation, and administration)

    View source

Educational content adapted from peptidedosages.com. Not medical advice.