Lab arithmeticTestagenNot approved (research only)
Testagen 20 mg: dosing evidence and reconstitution math
A 20 mg vial of Testagen mixed with 2 mL of diluent is 10 mg/mL, so 10 units on a U-100 syringe (0.1 mL) contain 1 mg.
Is there an established dose?
No FDA label or published human trial defines a dose of Testagen, so we do not publish one. Online "protocols" for it are not evidence.
- Testagen profile: FDA status, research volume and registered trials.
20 mg vial concentration table
Concentration = vial content ÷ diluent volume. A U-100 insulin syringe holds 1 mL in 100 units, so 1 unit = 0.01 mL.
| Diluent | Concentration | Per 10 units (0.1 mL) | Per 1 unit |
|---|---|---|---|
| 1 mL | 20 mg/mL | 2 mg | 200 mcg |
| 2 mL | 10 mg/mL | 1 mg | 100 mcg |
| 3 mL | 6.667 mg/mL | 667 mcg | 66.7 mcg |
| 5 mL | 4 mg/mL | 400 mcg | 40 mcg |
Arithmetic only; it assumes the vial contains exactly what the label states. Independent tests often find vials under- or over-filled, which is why a lot's certificate of analysis matters.
Syringe units for a given amount
Units on a U-100 syringe needed to draw each amount from this 20 mg vial, by diluent volume. The amounts are fractions of the vial (1/50, 1/20, 1/10, 1/5), not dose suggestions.
| Amount | 1 mL diluent | 2 mL diluent | 3 mL diluent |
|---|---|---|---|
| 400 mcg | 2 units | 4 units | 6 units |
| 1 mg | 5 units | 10 units | 15 units |
| 2 mg | 10 units | 20 units | 30 units |
| 4 mg | 20 units | 40 units | 60 units |
Units = amount ÷ concentration × 100. Draws above 100 units exceed a 1 mL syringe.
What the research covers
A PubMed search for "Testagen"[tiab] returned 2 records (1 from the last five years), none indexed as clinical trials when checked on October 2026. That is a very small literature; most of it is cell or animal work.
- The Inhibitory Effect and Adsorption Properties of Testagen Peptide on Copper Surfaces in Saline Environments: An Experimental and Computational Study.
- Penetration of short fluorescence-labeled peptides into the nucleus in HeLa cells and in vitro specific interaction of the peptides with deoxyribooligonucleotides and DNA.
Where research vials are listed
14 suppliers in our directory list Testagen (A–Z): Atomik Labz, BioLongevity Labs, Bulk Peptide Supply, Core Peptides, Eros Peptides, Liberty Peptides, Modern Aminos, NuScience Peptides, and 6 more. A listing is not a quality endorsement; ask for a lot-specific certificate of analysis.
Storage & handling
Follow the storage statement on the product sheet or certificate of analysis. Lyophilized (freeze-dried) peptides are generally kept cold, dry and away from light; once reconstituted, stability is shorter and depends on the compound and diluent. Bacteriostatic water contains 0.9% benzyl alcohol as a preservative; sterile water does not.
Frequently asked questions
How much bacteriostatic water for a 20 mg Testagen vial?
The diluent volume only sets the concentration: 1 mL gives 20 mg/mL, 2 mL gives 10 mg/mL and 3 mL gives 6.667 mg/mL. Smaller volumes are more concentrated, so each syringe unit holds more.
How much Testagen is in 10 units?
At 2 mL of diluent, 10 units (0.1 mL) of a 20 mg vial contain 1 mg; at 1 mL they contain 2 mg.
What is the dose of Testagen?
No FDA label or published human trial defines a dose of Testagen, so we do not publish one. Online "protocols" for it are not evidence.