Calculator
Advanced Peptide Dosage Calculator
Convert subject bodyweight, target dose (absolute or mcg/kg), vial size and bacteriostatic-water volume into the exact draw volume and U-100 / U-50 syringe ticks for any research peptide.
Inputs
Typical research range: 1 – 10 mcg/kg for healing peptides.
Results
Target dose
400 mcg
Concentration
2500 mcg/mL
Draw volume
0.160 mL
Ticks on U-100
16.0
Doses per vial
~12
Bodyweight
80.0 kg
Calculations assume a U-100 (100 units = 1 mL) or U-50 (50 units = 0.5 mL) insulin syringe. Verify concentration with your laboratory's analytical instrumentation. For research use only.
How this calculator works
The dosage calculator combines two well-established laboratory conversions. First, it derives the peptide concentration from the mass in the vial and the volume of bacteriostatic water used to reconstitute it: concentration (mcg/mL) = vial mass × 1000 ÷ BAC water volume. Second, it derives the required draw volume for the desired dose: volume (mL) = target dose ÷ concentration. The number of ticks on an insulin syringe is then volume × 100 for both U-100 (1 mL = 100 ticks) and U-50 (0.5 mL = 50 ticks) presentations.
Bodyweight-scaled dosing
Many healing-class peptides — including BPC-157 and Thymosin Beta-4 (TB-500) — are researched at dose ranges expressed in micrograms per kilogram of bodyweight, typically between 1 and 10 mcg/kg. The calculator multiplies subject weight (after converting from pounds if necessary) by your selected mcg/kg value to derive the absolute dose, then carries that forward through the volume conversion.
Assumptions
- U-100 insulin syringe: 100 marked ticks = 1 mL.
- U-50 insulin syringe: 50 marked ticks = 0.5 mL (the markings have the same scale but the body holds half the volume).
- Concentration is uniform — gentle vial inversion is sufficient; never shake.
- The reference range shown beneath the dose input reflects published research-stage protocols for the selected peptide.
Supporting research
- Sikiric P et al., The pharmacological properties of the novel peptide BPC 157 (PL-10), Inflammopharmacology, 1993.
- Goldstein AL et al., Thymosin β4: actin-sequestering protein moves to centre stage of medical sciences, Br J Cancer, 2005.
- Falutz J et al., Effects of Tesamorelin on Visceral Fat in HIV-Infected Patients, NEJM, 2007.
- Wilding JPH et al., Once-Weekly Semaglutide in Adults with Overweight or Obesity, NEJM, 2021.
Related tools
- Reconstitution Calculator — focused on the BAC-water-to-mg conversion only.
- Half-Life & Interval Calculator — derives the appropriate dosing interval for steady-state research.
- PDF Protocol Generator — export the full protocol for laboratory archives.