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Peptide Calculator

Accurately calculate your research dosages based on vial size, reconstitution volume, and desired dose.

For Research Purposes Only: This calculator is provided for educational and laboratory research applications. It is not intended for medical advice, diagnosis, or treatment. Always verify your calculations.

Compound Selection

Select a compound to instantly load recommended dosing and cycle details

Recommended Dose
Cycle Length

Reconstitution Parameters

Amount per vial
5 mg
mg
Water Added
1 mL
mL
Smart Yield Optimizer
Calculate exact water for a perfect tick mark

Dosage Requirements

Intended Dose
2.5 mg

Syringe Visualization

1 ml • 100 units

Your Recipe

Follow these exact steps for reconstitution

STEP 1
Add Water
0 mL
Creates a 0 mg/mL solution
STEP 2
Draw Dose
0.0 units
Total volume: 0.000 mL

Dose Conversion Table

Desired DoseDraw Volume (Units)Draw Volume (mL)

For researchers who want to verify the calculations manually, here is the exact formula used to determine the draw volume (in units).

1
Convert Vial Size to mcg:
Vial Size (mg) × 1000 = Total mcg
Example: 5mg × 1000 = 5000mcg
2
Convert Water Volume to Units:
Water Added (mL) × 100 = Total Units
Example: 2mL × 100 = 200 units
3
Calculate mcg per Unit:
Total mcg ÷ Total Units = mcg per Unit
Example: 5000mcg ÷ 200 units = 25.0 mcg/unit
4
Calculate Draw Volume:
Desired Dose (mcg) ÷ mcg per Unit = Draw Volume (Units)
Example: 2500mcg ÷ 25.0 mcg/unit = 100.0 units
Video Guide

How to Reconstitute Peptides

Step-by-step visual guide for proper mixing and handling.

Reconstitution Step-by-Step Guide
1

Preparation

Pop the cap off the peptide vial and wipe the rubber stopper with an alcohol swab. Let it dry.

2

Draw Water

Draw the exact calculated volume of Bacteriostatic Water into your mixing syringe.

3

Inject Slowly

Pierce the vial and inject the water slowly, letting it trickle down the inside wall.

4

Gentle Swirl

Do not shake. Gently swirl the vial in a circular motion until fully dissolved and clear.

Reconstitution FAQ

Why is my mixed peptide cloudy?

If your peptide is cloudy after mixing, it may mean it hasn't fully dissolved yet. Gently swirl the vial and let it sit in the refrigerator for 24 hours. If it remains cloudy, do not use it, as it may have degraded or precipitated.

Does bacteriostatic water expire?

Yes. Unopened bacteriostatic water typically has a shelf life of 1-2 years. Once opened or punctured, it is recommended to discard it after 28 days to ensure sterility and prevent bacterial growth.

What if I accidentally shook the vial?

Peptides are fragile molecular structures. Shaking the vial vigorously can break these bonds and render the peptide ineffective. Always gently swirl the vial rather than shaking it. If you accidentally shook it once, it may still be viable, but handle it with care moving forward.

Can I mix multiple peptides in one vial?

While some peptides can be mixed (creating a 'blend'), it is generally not recommended unless you are certain of their compatibility. Different peptides may require different pH levels or could cross-react, degrading one or both compounds. It's safest to reconstitute and store them separately.

Molecular Preservation

Clinical Storage Protocol

Proper storage is critical. Follow these guidelines to maintain maximum efficacy and prevent peptide degradation.

Lyophilized (Unmixed)

In powder form, peptides are highly stable but should be kept away from heat and light.

  • Freezer (-20°C): Up to 36 months
  • Fridge (2-8°C): Up to 24 months
  • Room Temp: Up to 60 days

Reconstituted (Mixed)

Once mixed with bacteriostatic water, the molecular bonds become fragile and require constant refrigeration.

  • Fridge (2-8°C): 21-30 days
  • DO NOT FREEZE after mixing
  • Keep out of direct sunlight

Handling & Care

Peptide chains can be easily damaged by physical trauma or improper handling techniques.

  • Never shake the vial
  • Swirl gently to dissolve
  • Inject water slowly down the side

Syringe & Supplies Guide

Understanding the right tools for accurate research administration.

Understanding Syringes

Needle Gauge (Thickness)

The higher the gauge number, the thinner the needle.

31G (0.25mm) Ultra-thin, least painful
29G (0.33mm) Standard thinness

Needle Length

5/16" (8mm) Ideal for SubQ
1/2" (12.7mm) Standard SubQ/IM

Required Supplies Checklist

  • Bacteriostatic Water

    Contains 0.9% benzyl alcohol to prevent bacterial growth. Never use plain sterile water for multi-dose vials.

  • Alcohol Swabs

    70% isopropyl alcohol for wiping vial stoppers and injection sites.

  • Insulin Syringes

    Typically 1mL (100 units), 0.5mL (50 units), or 0.3mL (30 units).

  • Sharps Container

    For safe disposal of used syringes and needles.

Optimal Injection Sites

Rotate your injection sites to prevent tissue damage and ensure consistent absorption.

Abdomen

The most common and recommended site.

  • At least 2 inches (5 cm) away from the belly button.
  • Pinch the fatty tissue to avoid intramuscular injection.
  • Excellent absorption rate and generally painless.

Outer Thighs

Great alternative for site rotation.

  • Upper outer area of the thigh, away from the knee.
  • Ensure you have enough subcutaneous fat in this area.
  • Avoid the inner thighs due to dense blood vessels.

Back of Arm

Useful but requires assistance.

  • Fleshy area on the back of the upper arm (triceps).
  • Often requires a partner to pinch the skin and inject.
  • Good for resting the abdomen during long cycles.
Abdomen (Primary)
Outer Thighs (Secondary)
Back of Arms (Alternative)
Rotation is key Keep injections at least 1 inch apart from previous sites to prevent lipohypertrophy (lumps under the skin).

Ready to Start Your Research?

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