Free research calculator
TB-500 reconstitution calculator.
Reconstitution math for TB-500: enter the vial size and bacteriostatic water to get the concentration, draw volume and U-100 insulin syringe units for any amount, in mg or mcg.
For in-vitro laboratory research use only. Not for human or veterinary use, and not intended to diagnose, treat, cure, or prevent any disease.
Worked example
TB-500 mg to units, 10 mg vial + 2 ml
| Amount | Draw volume | U-100 units |
|---|---|---|
| 1 mg | 0.2 ml | 20 |
| 2 mg | 0.4 ml | 40 |
| 2.5 mg | 0.5 ml | 50 |
About
TB-500 and reconstitution
TB-500 is a synthetic peptide based on thymosin beta-4, a naturally occurring 43-amino-acid protein. It is used in laboratory and animal research.
TB-500 is commonly supplied in 2 mg, 5 mg and 10 mg vials.
To reconstitute, the powder is dissolved in a measured volume of bacteriostatic water. The calculator divides the vial's mass by that volume to get the concentration, then converts any amount into milliliters and U-100 syringe units (100 units = 1 ml).
Questions
TB-500 calculator FAQ
How many units is 2 mg of TB-500?
It depends on how much water you add. In a 10 mg vial mixed with 2 ml of bacteriostatic water, the concentration is 5 mg/ml, so 2 mg is 40 units on a U-100 insulin syringe (0.4 ml). Change the vial or water above to get your exact number.
How much bacteriostatic water should I add to a 10 mg TB-500 vial?
The math works for any volume. More water lowers the concentration, so each unit holds less and small amounts are easier to measure; less water keeps volumes small. For a 10 mg vial: 1 ml gives 10 mg/ml, so each unit holds 100 mcg; 2 ml gives 5 mg/ml, so each unit holds 50 mcg; 3 ml gives 3.33 mg/ml, so each unit holds 33.3 mcg.
How do you convert TB-500 mg to units?
Divide the vial's mg by the ml of water to get the concentration in mg/ml. Then divide the amount you want by that concentration and multiply by 100 to get units on a U-100 syringe. Example: 10 mg in 2 ml is 5 mg/ml, and 2 mg / 5 x 100 = 40 units.
Is this TB-500 calculator free?
Yes. PepCalculators is free to use with no account. It does arithmetic only, for laboratory research purposes, and is not medical or dosing advice.
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