TB-500 (Thymosin Beta-4) Dosage Calculator
TB-500 (Thymosin Beta-4) is supplied in 5 mg and 10 mg lyophilised vials. Research draws are typically in milligrams rather than micrograms, so a 2 mL reconstitution keeps units in a comfortable mid-syringe range.
The formula
Concentration (mg/mL) = vial strength (mg) ÷ bacteriostatic water (mL). Draw volume (mL) = dose (mg) ÷ concentration (mg/mL). On a U-100 insulin syringe, units = draw volume (mL) × 100. For TB-500 (Thymosin Beta-4): a 5 mg vial in 2 mL of water is 2.5 mg/mL, so a 2 mg dose is 0.8 mL — 80 units.
Your TB-500 (Thymosin Beta-4) vial
1 mg = 1,000 mcg
Your result
Draw to
80
units on a U-100 insulin syringe
= 0.8 mL
- Concentration
- 2.5mg/mL
- 2,500 mcg/mL
- Draws per vial
- 2.5
- at 2000 mcg each
For laboratory and research use only. This calculator is a unit-conversion aid and is not medical guidance or a dosing recommendation.
Buy TB-500 (Thymosin Beta-4) — 99%+ purity, COA per lotTB-500 (Thymosin Beta-4) units per dose — quick reference
U-100 insulin-syringe units for each vial size we ship, reconstituted with 2 mL of bacteriostatic water.
| Vial | Concentration | 500 mcg | 1 mg | 2 mg | 2.5 mg |
|---|---|---|---|---|---|
| 5 mg | 2.5 mg/mL | 20 u | 40 u | 80 u | 100 u |
| 10 mg | 5 mg/mL | 10 u | 20 u | 40 u | 50 u |
How to reconstitute a TB-500 (Thymosin Beta-4) vial
- 1. Bring the vial to room temperature. Let a refrigerated or frozen vial equilibrate before opening so condensation doesn't form on the powder.
- 2. Swab both stoppers. Wipe the TB-500 (Thymosin Beta-4) vial and the bacteriostatic water vial with alcohol and let them dry.
- 3. Draw your diluent. Pull the volume you entered above into the syringe.
- 4. Run it down the glass wall. Angle the needle so water flows down the side of the vial rather than jetting onto the peptide cake — shear and foaming degrade peptides.
- 5. Swirl, never shake. Roll the vial gently until fully clear. Do not vortex or shake.
- 6. Label and refrigerate. Mark the date and concentration, then store at 2-8 °C away from light.
TB-500 (Thymosin Beta-4) calculator FAQs
How many units is 2 mg of TB-500 from a 10 mg vial?
10 mg with 2 mL of bacteriostatic water is 5 mg/mL. A 2 mg draw is 0.4 mL — 40 units on a U-100 insulin syringe, giving 5 draws per vial.
How do you calculate a TB-500 (Thymosin Beta-4) dose in syringe units?
Divide the vial strength by the bacteriostatic water you added to get the concentration: concentration (mg/mL) = vial mg ÷ water mL. Then draw volume (mL) = dose (mg) ÷ concentration. On a U-100 insulin syringe, 1.0 mL is 100 units, so units = draw volume × 100.
Does adding more water change how much TB-500 (Thymosin Beta-4) is in the vial?
No. The vial holds a fixed mass of lyophilised powder. More bacteriostatic water only dilutes it — each syringe unit carries less compound and the draw volume for the same dose gets larger, which can make small doses easier to measure accurately.
How is reconstituted TB-500 (Thymosin Beta-4) stored?
After reconstitution with bacteriostatic water, research peptides are kept refrigerated at 2-8 °C, protected from light, and away from freeze-thaw cycles. Unreconstituted lyophilised vials are far more stable and are typically stored frozen.