Does it matter how much bac water I add?

More water = lower concentration = more units per dose (larger injection volume). Less water = higher concentration = fewer units per dose. The total mg in the vial stays the same either way. Enter the diluent volume specified for your product or research protocol. More diluent lowers concentration and increases U-100 units per dose.

1 mg = 1,000 mcg (micrograms). Many peptide protocols specify doses in mcg. Just divide by 1,000 to convert to mg, or multiply the mg result by 1,000 to get mcg. The dose tier card has a mcg/mg toggle when you pick Custom.

Can I change the supply wastage allowance?

Yes. The default wastage allowance is 0%. You can select 5%, 10%, or 20% for an optional practical supply estimate. Draw volume and U-100 syringe units are always exact math from your inputs.

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Peptide Reconstitution Calculator

Live laboratory calculator — every field updates instantly and every result is editable. Concentration = vial ÷ BAC water; draw volume = target ÷ concentration; U-100 units = mL × 100. Research math only — not a dose recommendation.

Compound quick presets

Optional. Prefills a common vial strength only — every value stays editable. Not a protocol.

Live mixture inputs

Every control updates instantly. Presets are shortcuts only — not recommendations.

Shortcuts convert units only. Enter the mass from your research protocol — this tool does not recommend a dose.

Published reference schedule

Optional reference only. Selecting a step imports that published value into the calculator — it is not a dose recommendation. Confirm the cited source applies to your exact formulation.

Injection frequency (for optional supply estimate)

U-100 units represent liquid volume, not compound International Units.

What if I add more BAC water?

Same vial and target amount — only the diluent changes. More water → lower concentration → more units to draw.

Recent calculations

Formula used

Optional: estimate supply duration

Exact requirement is dose × frequency. Choose a wastage allowance only if you want a practical estimate — never treated as the exact amount needed.

View available vial strengths

Pack coverage uses your selected wastage allowance. Product links do not change your dose or diluent inputs.

Need a vial? View available strengths after reviewing the calculation.

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How the Calculation Works

The math is straightforward once you understand the relationship between mg, mL, and syringe units. Worked example with Tesamorelin (10 mg vial; 2 mg dose, the top of its published 1–2 mg daily range):

Concentration = Peptide in vial (mg) ÷ Bac water added (mL) 10 mg ÷ 2 mL = 5 mg/mL

Volume to inject = Desired dose (mg) ÷ Concentration (mg/mL) 2 mg ÷ 5 mg/mL = 0.4 mL

U-100 syringe units = Volume (mL) × 100 0.4 mL × 100 = 40 U-100 units

A standard 1 mL U-100 insulin syringe has 100 unit markings. Each unit equals 0.01 mL. So for a 2 mg Tesamorelin example dose with 2 mL diluent, you draw to the 40 U-100 unit mark. This worked example is illustrative only.

Worked examples (illustrative only)

These examples show the arithmetic for sample inputs. They are not product instructions or dose recommendations. Always use the diluent volume specified for your exact product or protocol:

Tesamorelin — 10 mg vial + 2 mL bac water → 5 mg/mL · 2 mg = 40 U-100 units

Semaglutide — 5 mg vial + 2 mL bac water → 2.5 mg/mL · 0.25 mg starting dose = 10 U-100 units (dose-escalation: the published schedule steps up to 2.4 mg = 96 U-100 units)

Tirzepatide — 10 mg vial + 2 mL bac water → 5 mg/mL · 2.5 mg starting dose = 50 U-100 units (dose-escalation: the published schedule steps up to 15 mg = 300 U-100 units — split across injections or size up the vial)

BPC-157 — 5 mg vial + 2 mL bac water → 2.5 mg/mL · 500 mcg = 20 U-100 units

Ipamorelin — 5 mg vial + 2 mL bac water → 2.5 mg/mL · 200 mcg = 8 U-100 units

CJC-1295 (no DAC) — 2 mg vial + 2 mL bac water → 1 mg/mL · 200 mcg = 20 U-100 units

PT-141 — 10 mg vial + 2 mL bac water → 5 mg/mL · 1.75 mg = 35 U-100 units

Supply assumptions

The calculator shows exact requirement (dose × frequency) separately from any estimated practical requirement that applies a wastage allowance you select (0% by default). Residual volume in syringes varies by device and technique; published measurements of fixed-needle insulin syringes often report residual volumes well below a blanket 0.04 mL per draw. Choose an allowance only if you want a practical buffer — never treat a buffered figure as the exact amount needed.

Optional published reference schedules (when shown) import a cited value only. They do not change diluent volume, and they are not dose recommendations for research-labelled powders.

Common Questions

What if I use a 0.5 mL syringe? - A 50-unit syringe (0.5 mL) has the same unit-to-volume ratio: each unit is still 0.01 mL. The calculator results are the same; you just can’t draw more than 50 units per injection.

Does it matter how much diluent I add? - More diluent = lower concentration = more U-100 units per dose. Less diluent = higher concentration = fewer units. Enter the volume specified for your product or protocol — there is no universal default.

mcg vs mg? - 1 mg = 1,000 mcg. Enter the dose from your protocol and toggle mcg/mg as needed.

What about the wastage allowance? - Default is 0%. Choose 5%, 10%, 20%, or keep exact. Draw volume and U-100 units are always exact math; only the optional supply estimate uses the allowance.

Are syringe units the same as IU? - No. U-100 syringe units measure liquid volume (1 unit = 0.01 mL). They are not International Units of biological activity.

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