TB-500 Dosage Calculator: Reconstitution and Units
To calculate TB-500 dosage, divide your target dose (mg) by the vial concentration. Concentration = vial mg ÷ BAC water mL. For a 5 mg vial with 2 mL BAC water: concentration is 2.5 mg/mL. A 2 mg dose equals 0.8 mL (80 U-100 units) on a standard insulin syringe.
Example TB-500 Dosage Table
Common vial and BAC water combinations with calculated concentration, draw volume, and U-100 syringe units. For education only — verify your vial label before use.
5 mg
2 mL
2.5 mg/mL
1 mg
0.4 mL
40 units
2 mg
0.8 mL
80 units
10 mg
5 mg/mL
5 mL
2 mg/mL
1 mL
100 units
How to Calculate TB-500 Dosage
Three steps convert any vial and BAC water combination into the exact volume to draw on a U-100 insulin syringe.
Step 1 — Calculate concentration (mg/mL)
Step 2 — Calculate draw volume (mL)
Step 3 — Convert to U-100 syringe units
Dosage Formula
Concentration formula
Draw volume formula
U-100 syringe units
These three formulas apply to any TB-500 vial, regardless of size. U-100 is the standard insulin-syringe scale: 100 units = 1 mL.
TB-500 Calculator Tool
Enter your vial strength, BAC water volume, and target dose below. The calculator outputs concentration (mg/mL), draw volume (mL), and U-100 units. Educational and research use only.
Example TB-500 Calculations
Step-by-step worked examples using common vial sizes. Results are for illustrating the math only.
5 mg vial + 2 mL BAC water, 2 mg dose
Vial: 5 mg | BAC water: 2 mL | Target dose: 2 mg
Concentration: 5 ÷ 2 = 2.5 mg/mL
Draw volume: 2 ÷ 2.5 = 0.8 mL
U-100 units: 0.8 × 100 = 80 units
10 mg vial + 2 mL BAC water, 2 mg dose
Vial: 10 mg | BAC water: 2 mL | Target dose: 2 mg
Concentration: 10 ÷ 2 = 5 mg/mL
Draw volume: 2 ÷ 5 = 0.4 mL
U-100 units: 0.4 × 100 = 40 units
TB-500 Reconstitution Guide
TB-500 is typically supplied as a lyophilised powder in 5 mg vials. Reconstitute with bacteriostatic water (BAC water):
Wipe both stoppers with an alcohol swab.
Draw 2 mL BAC water into a sterile syringe (standard for a 5 mg vial).
Inject slowly along the vial wall. Gently swirl to dissolve — no vigorous shaking.
The solution should be clear and colourless. Store at 2–8 °C.
TB-500 research protocols often use higher per-injection doses (1–4 mg) compared with peptides like BPC-157, so a standard 2 mL reconstitution gives convenient draw volumes for most scenarios.
Frequently Asked Questions
Divide your target dose (mg) by the concentration (mg/mL). For 5 mg + 2 mL BAC: 2.5 mg/mL. For a 2 mg dose: 2 ÷ 2.5 = 0.8 mL = 80 U-100 units.
U-100 is the standard scale for insulin syringes. 100 units = 1.0 mL. That means 10 units = 0.1 mL, 50 units = 0.5 mL. Multiply any draw volume in mL by 100 to get the U-100 units reading.
Yes. Changing BAC water volume changes the concentration (mg/mL), which changes the draw volume for the same mg dose. Always recalculate using: concentration = vial mg ÷ BAC water mL, then draw volume = dose mg ÷ concentration.
TB-500 is a synthetic peptide derived from thymosin beta-4, studied in tissue repair research contexts. This calculator provides only the reconstitution math — it does not provide dosing recommendations.
A 1 mL (100-unit) syringe holds up to 1 mL. At 2.5 mg/mL, a 2 mg dose = 0.8 mL, which fits comfortably in a 100-unit syringe. For doses requiring more than 1 mL, use a larger syringe or split into multiple injections.
Related Calculators
BPC-157 Dosage Calculator
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Full Calculator + Protocol Tracker
The PeptideUniv app includes the full reconstitution calculator, dosing schedules, cycle tracker, and reminders — all in one place.
For educational and research purposes only. Not medical advice. Consult a licensed healthcare professional before making any medical or health-related decisions.