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Reconstitution calculator
Vial mg + BAC water mL → insulin-syringe units. No login, no tracking, no ads. Just the math.
How the math works
- Concentration = vial mg ÷ BAC water mL (convert mg → mcg by ×1000).
- Dose volume = desired mcg ÷ concentration.
- Syringe units = dose volume mL × 100 (insulin syringes are universally marked 100 u = 1 mL, regardless of barrel size).
Worked example — 5 mg BPC-157 in 2 mL BAC, 250 mcg dose: concentration = 2500 mcg/mL → dose volume = 0.10 mL → draw to 10 u on a 1 mL insulin syringe.
Calculator FAQ
Why are insulin syringes marked "100 u"?
Because they were originally sized for U-100 insulin (100 units per mL). The 100-unit marking just means "1 mL." The same unit scale applies whether the barrel holds 0.3 mL (30 u), 0.5 mL (50 u), or 1.0 mL (100 u) — they're all marked in 1 u = 0.01 mL increments.
What if my draw ends up larger than the syringe?
Reconstitute with less BAC water (higher concentration) or use a larger-barrel syringe. The calculator will flag this case with a warning. Do NOT split one injection into two draws unless your protocol specifically calls for divided doses.
What if my draw is under 1 unit?
Dosing accuracy on an insulin syringe falls off below ~1 u (~0.01 mL). Reconstitute with more BAC water to lower the concentration, so your per-dose volume becomes a cleaner integer draw.
Is the peptide-preset list authoritative?
No. Presets show common starting setups seen in public protocol references. Always verify with your prescribing clinician — your vial size, potency, and target dose may differ.