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Short answer: This tool is a peptide reconstitution calculator and peptide dosage calculator in one — enter vial mass (mg), diluent volume (mL), and optional target mcg to see concentration (mcg/mL) and draw volume. Works for any labeled mass, including 10 mg or 30 mg research vials (same math as a retatrutide peptide calculator). For laboratory and research use only.
Not medical advice. Products discussed on this site are for research use only.
Total peptide in the vial, as shown on the label
Volume of BAC water to add
Target dose per administration in the research protocol
Concentration
2,500 mcg/mL
2.50 mg/mL
Volume Per Dose
0.100 mL
Syringe Units (100-unit syringe)
10.0 units
Draw to the 10-unit mark on a standard insulin syringe
Doses Per Vial
20 doses
At 250mcg per dose from a 5mg vial
Our peptide reconstitution calculator eliminates the guesswork from peptide preparation. Whether working with growth hormone-releasing peptides, antimicrobial compounds, or tissue repair factors, accurate reconstitution and dosing calculations are critical for consistent and reproducible research results.
Input the total amount of lyophilized peptide in your vial, measured in milligrams (mg). This information is printed on the vial label. Common amounts include 2mg, 5mg, and 10mg vials.
Input how much bacteriostatic water (BAC water) you plan to add, measured in milliliters (mL). Common volumes are 1mL and 2mL. Larger volumes create lower concentrations with larger administration volumes per dose, which can improve measurement accuracy. Smaller volumes create higher concentrations with smaller administration volumes.
Input the target dose in micrograms (mcg). The calculator will show exactly how many units to draw on a standard 100-unit insulin syringe for the research protocol.
The calculator provides three key outputs:
5 mg + 2 mL: 5,000 mcg ÷ 2 mL = 2,500 mcg/mL.
10 mg + 2 mL: 10,000 mcg ÷ 2 mL = 5,000 mcg/mL.
30 mg + 3 mL (30 mg tirzepatide peptide reconstitution example): 30,000 mcg ÷ 3 mL = 10,000 mcg/mL. Same formula if you use 30 mg + 1 mL → 30,000 mcg/mL. Choose volume to match your pipette or protocol precision.
General formulas: Concentration (mcg/mL) = (mg × 1,000) ÷ mL. Volume for X mcg = X ÷ concentration. Syringe units (100 per mL) = volume in mL × 100.
For example, with a 5mg vial and 2mL of BAC water: concentration is 2,500mcg/mL. For 250 mcg drawn for a protocol: 250 ÷ 2,500 = 0.1mL = 10 units on a 100-unit/mL syringe scale.
Accuracy starts with proper technique. Always direct the BAC water stream against the vial wall — never spray directly onto the lyophilized peptide cake. Gently swirl to dissolve; never shake. For a complete step-by-step protocol, read our guide to reconstituting peptides.
Reconstituted peptides must be stored at 2-8°C (36-46°F) and protected from light. With bacteriostatic water, most peptides remain stable for 4-6 weeks. Always label your vials with the reconstitution date, peptide name, and concentration for safety.
Calculator output is only as accurate as the mass in the vial. Match label and COA to the actual batch. Current research peptide deals — use code SOL at Live Alpha Labs. Step-by-step reconstitution guide.
We don’t run lab tests or provide COAs. When we link to retailers, we favor those that offer COA documentation and purity information — confirm with the retailer for each product.
Shop Research PeptidesImportant Disclaimer — For Research Use Only
The information provided is for educational and research purposes only. All peptides discussed or linked on this site are intended strictly for laboratory and scientific research use only (RUO) and are not for human consumption, injection, ingestion, or any therapeutic application. These products have not been evaluated or approved by the FDA or any regulatory body and are not intended to diagnose, treat, cure, or prevent any disease or condition. Reliance on this content is at your own risk. Consult qualified professionals for any health-related decisions. PurePep Vital disclaims all liability for misuse. Products are offered by third-party retailers for research use only.
PurePep Vital is a chemical supplier. PurePep Vital is not a compounding pharmacy or chemical compounding facility as defined under 503A of the Federal Food, Drug, and Cosmetic Act. PurePep Vital is not an outsourcing facility as defined under 503B of the Federal Food, Drug, and Cosmetic Act.