TB-500 Reconstitution Calculator
Use this free TB-500 dosage calculator after you reconstitute your vial: convert a target amount in mg into U-100 insulin syringe units and mL from your vial size and bacteriostatic water volume. Educational math only — not dosing advice.
TB-500 Calculator
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What is TB-500?
TB-500 is a synthetic peptide fragment related to Thymosin Beta-4, a naturally occurring protein involved in cell migration and tissue-repair signaling. In research conversations it often appears alongside BPC-157, though they are different compounds.
This page is a TB-500 dosage calculator for reconstituted vials: convert mg into U-100 insulin syringe units after bacteriostatic water is added. For BPC-157 (usually discussed in mcg), use the BPC-157 dosage calculator.
TB-500 is usually supplied as a lyophilized (freeze-dried) powder. Before you can measure an accurate liquid volume, it has to be reconstituted with bacteriostatic water. For sterile technique, see how to reconstitute peptides.
After mixing, converting a TB-500 amount in mg into syringe units depends on:
- How much TB-500 is in the vial (mg on the label)
- How much bacteriostatic water you added (mL)
- The target amount per draw (mg)
The calculator on this page runs that conversion so you can see concentration, amount per U-100 unit, and the draw in units and mL.
Disclaimer: This page is for general education and unit conversion only. It does not tell you what to take, diagnose anything, or replace advice from a qualified medical professional.
How to Use the TB-500 Dosage Calculator
This TB-500 dosage calculator converts vial milligrams and bacteriostatic water into concentration, then turns a target amount in mg into U-100 insulin syringe units (and mL) after reconstitution.
Step 1: Choose Your Syringe Size
Pick the U-100 insulin syringe you’re using. On U-100, 100 units = 1.0 mL.
Step 2: Select the Vial Amount
Choose the TB-500 amount on your label—commonly 2 mg, 5 mg, or 10 mg—or tap Other if your vial is different.
Step 3: Enter Water Added
Enter how much bacteriostatic water you added (in mL). That sets concentration. For sterile mixing steps, see how to reconstitute peptides.
Step 4: Choose Your Amount
Set your target amount in mg. You’ll see concentration, amount per U-100 unit, and the exact draw in units and mL.
Worked examples (educational math)
Assume a 5 mg TB-500 vial reconstituted with 2 mL bacteriostatic water:
- Concentration = 5 mg ÷ 2 mL = 2.5 mg/mL
- On a U-100 syringe, 100 units = 1 mL, so each unit = 0.025 mg
- 0.5 mg = 0.5 ÷ 0.025 = 20 units (0.20 mL)
- 2 mg = 2 ÷ 0.025 = 80 units (0.80 mL)
If you used 1 mL water instead, concentration becomes 5 mg/mL (0.05 mg per unit), so the same 0.5 mg amount becomes 10 units. Water volume changes units for the same mg — always enter the volume you actually added.
Tip: Less bacteriostatic water makes a stronger mix, so the same mg amount usually needs fewer syringe units. Educational unit conversion only — not dosing advice.