Peptide Dosage Calculator

Simplify your research with our easy-to-use Peptide Dosage Calculator, designed for precision and accuracy. Whether you are working with standard U-100 or U-40 syringes, this tool helps you determine the exact volume needed for your desired dose by accounting for vial quantity (mg) and the amount of bacteriostatic water added. With specialized "Quick Fill" presets and an integrated bodyweight-based dosing feature, you can instantly convert mcg requirements into clear syringe units.

Streamline your calculations and eliminate the guesswork to ensure consistent results every time.

Quick fill
Optional: molarity (molecular weight)

Your dosage

Draw to units

  • Concentration: mcg/mL
  • Volume for dose: mL ( µL)
units →
  1. Reconstitute your peptide with the stated volume of bacteriostatic water.
  2. Draw to exactly units on your syringe as shown by the red line.
  3. This corresponds to a dose of mcg.
  4. Store reconstituted peptide in the refrigerator unless your protocol states otherwise.
Educational / laboratory reference only. Not medical advice. Products are for research use only where permitted. Verify all calculations independently. No warranty of accuracy.

How to use this calculator:

Select Syringe Type: Enter your syringe volume (e.g., 0.3, 0.5, or 1 mL) and total unit capacity.

Input Vial Details: Provide the total milligrams (mg) of peptide in your vial and the volume of bacteriostatic water used for reconstitution.

Set Your Dose: Enter your desired dose in micrograms (mcg). You can also use the mcg per kg tool to calculate a dose based on specific bodyweight.

Get Results: View your precise dosage in units and mL instantly.

Protocol for Research Peptide Preparation

To achieve high-fidelity results in laboratory environments, the handling and reconstitution of lyophilized peptides must be executed with precision. Peptides are sensitive to heat, light, and mechanical stress. While our advanced lyophilization process ensures stability during domestic shipping across Canada, maintaining long-term bioactivity requires strict adherence to cold-chain storage and gentle reconstitution protocols.

Optimal Storage Environments

Lyophilized Powder: Upon arrival, store freeze-dried peptides in a constant-temperature freezer at -20°C. For multi-year storage, -80°C is recommended to prevent any structural degradation.

Reconstituted Solution: Once in liquid form, peptides are highly volatile. Keep the solution refrigerated at 2°C to 8°C. If the peptide will not be used within 72 hours, we recommend "aliquoting"—dividing the solution into single-use vials—and freezing them to avoid the damaging effects of repeated freeze-thaw cycles.

Step-by-Step Reconstitution Guide

  • Sanitization: Clean the rubber stopper of the vial with an isopropyl alcohol swab before needle insertion.
  • Solvent Selection: Most research applications utilize Bacteriostatic Water (0.9% Benzyl Alcohol) to inhibit bacterial growth. For basic peptides, a sterile 0.1% acetic acid solution may be required for full dissolution.
  • The "Slow-Drip" Method: Aim the needle at the glass side-wall of the vial. Allow the solvent to trickle down the glass into the powder. Never spray the liquid directly onto the lyophilized cake.
  • Gentle Dissolution: Slowly swirl the vial between your palms until the liquid is crystal clear. Do not shake the vial, as this creates kinetic energy that can break delicate peptide bonds.

Critical Success Factors

Avoid Agitation Mechanical stress (shaking) causes foaming and denatures the protein.
Light Sensitivity Store vials in the dark; UV exposure can lead to rapid oxidation.
Purity Check If the solution remains cloudy after 15 minutes, the pH may need slight adjustment.

Disclaimer: These products are intended for laboratory research purposes only. Proper safety equipment and sterile techniques should always be utilized when handling research-grade chemicals.