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Three numbers in — how much peptide is in your vial, how much diluent you added, and the dose you want to draw — and this works out the concentration and how much to draw for it, in mL and on a standard U-100 insulin syringe. That's the whole tool: arithmetic on the numbers you already have, never a suggested vial size, diluent amount, or dose.
Fill in the vial and diluent to see the concentration.
How this works
Reconstituting a peptide just dilutes it: the mg in the vial spread across the mL of bacteriostatic water you add. Concentration is vial ÷ diluent, and how much to draw for a given dose is that dose divided by the concentration. A U-100 insulin syringe reads in units, where 100 units is 1 mL — this converts to that reading because it is what most people actually draw to, not because mL is wrong.
This page does not know what peptide you are working with, what a reasonable dose is, or how long it stays good once mixed — those depend on the specific compound, and a calculator that guessed at them would be guessing about something that matters. Check the peptide's own handling and storage guidance for that.
What’s out there
Search by the proper name or the shorthand — both land on the same compound, which is the point: your history shouldn’t fragment across four spellings of one thing.
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Listing something here is not a suggestion to take it. Most of these are research compounds rather than approved medicines, several are prescription-only where they are approved at all, and we make no claim about whether any of them is safe or works. It is a reference for people already keeping a record — for discussion with your own physician, not medical advice.
Why we built this
Bloodwrk tracks every dose you log against your labs and body composition over time — so "what was I actually running when this marker moved" has a real answer instead of a guess from memory. This calculator gets the arithmetic right up front; the app is where that number becomes part of a record instead of a sticky note.
Look at a real record