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Documentation Index

Fetch the complete documentation index at: https://bardo-3d6a1fd2.mintlify.app/llms.txt

Use this file to discover all available pages before exploring further.

Measuring peptide doses accurately requires knowing the concentration of your reconstituted solution. The reconstitution calculator takes three inputs — vial size, bacteriostatic water volume, and target dose — and gives you every number you need to draw an accurate dose: concentration in mg/mL, the exact volume to inject in mL, the equivalent reading on a U-100 insulin syringe, and how many doses remain in the vial. All calculations happen locally in your browser with no data sent anywhere.

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Open the calculator

Select Calculator from the main navigation. You can use it as a standalone tool at any time — you do not need to have a saved vial or protocol.

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Inputs

Vial size

The total amount of dry peptide in the vial. Enter the number and choose the unit: mg or mcg.

Bacteriostatic water

The volume of bacteriostatic water you added (or plan to add) to the vial. Enter in mL.

Target dose

The dose you want to inject per administration. Enter the number and choose the unit: mcg or mg.
The calculator converts all values to mcg internally before computing. You can mix units freely — enter a vial size in mg and a target dose in mcg and the result will be accurate.

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Unit conversion

The calculator uses a single conversion factor throughout: 
1 mg = 1000 mcg
So a 5 mg vial contains 5,000 mcg. A 250 mcg target dose equals 0.25 mg. Always double-check which unit a peptide is typically measured in before entering values.

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The math

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Step 1 — Concentration

Concentration (mg/mL) = Vial Size (mg) ÷ Bacteriostatic Water (mL)
This tells you how much peptide is dissolved in every millilitre of solution.

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Step 2 — Volume per dose

Volume Per Dose (mL) = Target Dose (mcg) ÷ Concentration (mcg/mL)
Internally the app works in mcg throughout this step. The result is expressed in mL — the volume you draw into the syringe.

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Step 3 — Syringe units (U-100 insulin syringe)

Syringe Units = Volume Per Dose (mL) ÷ 0.01
A U-100 insulin syringe has 100 graduations per mL, so each graduation (1 “unit”) equals exactly 0.01 mL. Dividing the volume by 0.01 gives you the mark to draw to on the syringe barrel.

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Step 4 — Total doses

Total Doses = floor(Vial Size (mcg) ÷ Target Dose (mcg))
This is the maximum number of full doses available in the vial. The value is rounded down — a partial dose at the end is not counted.

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Worked example

Scenario: 5 mg vial, 2 mL bacteriostatic water, 250 mcg target dose per injection.
StepCalculationResult
Convert vial size5 mg × 10005,000 mcg
Concentration5,000 mcg ÷ 2 mL2,500 mcg/mL (2.5 mg/mL)
Volume per dose250 mcg ÷ 2,500 mcg/mL0.1 mL
Syringe units0.1 mL ÷ 0.0110 units
Total dosesfloor(5,000 ÷ 250)20 doses
Draw to the 10-unit mark on a U-100 insulin syringe to deliver exactly 250 mcg from this preparation.
Choosing a water volume that produces a round concentration simplifies future measurements. For a 5 mg vial, adding 5 mL gives 1 mg/mL, or 2.5 mL gives 2 mg/mL. The calculator can suggest these common ratios based on your vial size.

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Outputs reference

OutputUnitDescription
Concentrationmg/mLPeptide mass per mL of solution
Volume per dosemLVolume to draw for one target dose
Syringe unitsunitsMark on a U-100 insulin syringe
Total dosescountFull doses available in the vial

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Saving a calculation to a vial

If you have a corresponding saved vial, open it from Vial Manager and enter the bacteriostatic water volume there. The vial record will store the calculated concentration and make it available automatically in the protocol builder — so you do not need to re-enter the same numbers manually.
Always verify calculations independently before injecting. This tool is for organisational purposes only and does not constitute medical advice. Consult a qualified healthcare professional to confirm dosage protocols.