To achieve —, draw — (— on a U100 syringe).
Why use a peptide calculator?
It’s built to eliminate confusion,
prevent over-dilution, and make peptide research more accessible—especially for
self-learners and first-time researchers.
The RP Reconstitution & Dosage Calculator is a research-only tool designed to help you determine:
● How much bacteriostatic water to add to your peptide vial
● How many units to draw on an insulin syringe based on your target microgram (mcg) or milligram (mg) dosage
● The resulting concentration of your vial in mg/mL
● The appropriate syringe volume to use based on your dose
Want our FREE peptide research guide?
- A full Peptide Dosing Cheat Sheet
- Step-by-step Reconstitution Instructions
- Storage Tips (for fridge & freezer)
- Our beginner-friendly unit-to-mcg converter
- Charts, formulas, and “Do Not Miss” warnings
Legal & Research Disclaimer
This calculator is intended for RESEARCH USE ONLY. None of our products or tools are intended for human consumption, clinical treatment, or diagnosis. Always follow best practices for safe and compliant research protocols.
Commonly Asked Questions
What is a peptide reconstitution calculator?
It’s a tool that helps researchers calculate the right mix of peptide and water, ensuring accuracy in microgram (mcg) or milligram (mg) doses.
How do I know how much water to add to a peptide vial?
Use our calculator. For example, if your vial contains 10mg of peptide and you add 1mL of BAC water, your solution is 10mg/mL.
What does “300mcg dose = 30 units” mean?
That means you should draw to the 30-mark on an insulin syringe if your peptide is 10mg/mL.
Can I use this for Tesamorelin, BPC-157, or Retatrutide?
Yes. The calculator works for any research peptide vial where you know the mg and dilution volume.
Why use BAC water instead of sterile water?
BAC water contains benzyl alcohol which preserves peptide solutions for multiple uses—critical for research integrity.
What is a typical insulin syringe size for peptides?
U100 insulin syringes are common. Each “unit” equals 1/100th of a mL. Our calculator helps align your dose with this format.
What if I mess up my calculation?
Always double-check and use written notes. Our guide has step-by-step examples to help you avoid common reconstitution errors.
Where can I get bacteriostatic water?
We recommend sourcing it from a licensed medical supply or compounding pharmacy. We do not sell BAC water.
Is this tool approved by the FDA?
No. It’s a general research tool intended for educational and laboratory research use only—not medical or diagnostic use.
Can I store reconstituted peptides?
Yes, for most peptides, store in the fridge (2–8°C). Some may require freezing. See our guide for full storage best practices.