Tools / Blend vial
Blend vial calculator
For vials with more than one peptide. Enter the mg of each, the water and the dose of the one you measure by. You'll see the line to fill to and what each peptide works out to.
Example: BPC-157 5 mg + TB-500 5 mg in 2 mL. A 250 mcg BPC-157 dose is the 10-unit line, which also gives 250 mcg of TB-500.
Pick a common blend, then match the mg to your label. Amounts vary between vials.
Bacteriostatic (bac) water, in mL.
Your dose of one peptide sets the draw. The others come along in the same ratio.
It's printed on the packet: 0.3, 0.5 or 1 mL.
Fill your syringe to
10units
That draw gives you:
- BPC-157
- 250 mcg
- TB-500
- 250 mcg
Each unit holds
- BPC-157
- 25 mcg
- TB-500
- 25 mcg
In a blend you can't change one peptide's dose without changing the others. Confirm the amounts with your prescriber or pharmacist.
Checked 8 November 2026 by the PeptideTracker editorial team · This tool does the math only. It doesn't recommend a dose.
[02] How it works
One draw, every peptide in the vial
Every peptide in a blend is dissolved in the same water, so each unit holds a fixed amount of each one. Choose the peptide whose dose you're matching. The calculator works out the units for that dose, then shows what the same draw gives of the others.
Blend amounts vary between suppliers. Always match the mg to the label on your vial.
[03] Questions
Questions
How do I dose a BPC-157 and TB-500 blend?
Pick the peptide you're measuring by, enter its dose, and the calculator gives the units to draw. In a 5 mg + 5 mg vial mixed with 2 mL, 250 mcg of BPC-157 is 10 units, and that same draw also gives 250 mcg of TB-500.
Can I change the dose of just one peptide in a blend?
No. Both peptides are mixed in the same liquid, so every unit holds both in a fixed ratio. To dose them separately you'd need separate vials.
My blend label lists a total mg. What do I enter?
Enter the mg of each peptide if the label shows them. If it only shows a total, check with the supplier or pharmacy for the split, because the result depends on it.
Spotted a mistake or something out of date? Tell us. We aim to fix factual errors within two working days.
[04] Read next
Guides that go with this calculator
- BPC-157 vs TB-500They're often sold together, sometimes in one vial, but they're different peptides with very different amounts of evidence. Neither is FDA-approved.
- BPC-157BPC-157 is a 15-amino-acid research peptide. It isn't FDA-approved, human data is 3 small studies (30 people), and its half-life in people isn't known.
- TB-500TB-500 is a 7-amino-acid fragment of thymosin beta-4, not the full protein. It isn't FDA-approved, has no published human studies and is banned by WADA.
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