Beginner setup
Vial sizes vary by vendor. Smaller bottles are usually 3 mL; larger bottles are often 10 mL. Match the label on the vial you actually bought, then use the calculator below if you need to adjust.
Vial strength 20 mg
Bottle format often 3 mL
BAC water 3 mL
Concentration 6.67 mg/mL
Overview
Testagen is a Khavinson bioregulator peptide targeting Leydig cells — the testicular cells that make testosterone. It’s the peptide-world’s soft approach to endocrine support, very different from HCG’s direct LH mimicry.
Preparation
Reconstitute a 20 mg vial with 3 mL of bacteriostatic water (BAC) for a ~6.67 mg/mL concentration. Refrigerate after mixing.
| Vial | BAC | Concentration |
|---|---|---|
| 20 mg | 3 mL | 6.67 mg/mL |
Protocol
| Period | Dose | Units (@ 6.67 mg/mL) | Frequency |
|---|---|---|---|
| Weeks 1–2 | 100 mcg | 1.5 units (0.015 mL) | 1x/day |
| Weeks 3–4 | 150 mcg | 2.25 units (0.0225 mL) | 1x/day |
| Weeks 5–8 | 200 mcg | 3 units (0.03 mL) | 1x/day |
| Weeks 9–12 | 250–300 mcg | 3.75–4.5 units (0.0375–0.045 mL) | 1x/day |
Cycle
10–20 day cycles or 8–12 week runs. Doses are small — use a 30 unit syringe for readable markings.