🧪 Peptide Reconstitution Guide
Step-by-step instructions for preparing lyophilized peptides with our easy dosage calculator
📊 Dosage Calculator
Calculate exact injection volumes for your research protocol
✅ Your Results
What You'll Need
Gather these supplies before starting the reconstitution process
Lyophilized Peptide
Your peptide vial (freeze-dried powder)
Bacteriostatic Water
Sterile water with 0.9% benzyl alcohol
Insulin Syringes
29-31 gauge, 1mL capacity
Alcohol Swabs
70% isopropyl alcohol pads
Nitrile Gloves
Powder-free, sterile preferred
Refrigeration
36-46°F (2-8°C) storage after reconstitution
Step-by-Step Reconstitution
Follow these steps carefully for proper peptide preparation
Prepare Your Workspace
Clean your work surface with alcohol. Wash hands thoroughly and put on nitrile gloves. Ensure good lighting and a stable surface.
Remove Protective Caps
Take off the plastic caps from both the peptide vial and bacteriostatic water. Do not remove the rubber stoppers underneath.
Sterilize the Stoppers
Wipe both rubber stoppers with alcohol swabs. Allow to air dry for 30 seconds before proceeding.
Draw the Bacteriostatic Water
Using a new syringe, draw up your calculated amount of BAC water. Reference the calculator above for volume.
Inject Water into Peptide Vial
Insert needle into the peptide vial at an angle. Slowly release the water against the glass wall — do NOT spray directly onto the powder.
- Let the water drip down the side
- This prevents damaging the peptide
- Takes about 30-60 seconds
Allow to Dissolve
Let the vial sit for 1-2 minutes. The peptide should dissolve on its own. Do NOT shake — gently swirl if needed.
Inspect the Solution
The reconstituted peptide should be clear and colorless. If cloudy or contains particles, do not use.
Store Properly
Refrigerate immediately at 36-46°F (2-8°C). Most reconstituted peptides remain stable for 3-4 weeks when stored correctly.
Tips & Best Practices
Important guidance for optimal results
💡 Go Slow with the Water
Injecting too fast can damage peptide structures. Let gravity do the work as water drips down the vial wall.
💡 Use Fresh Syringes
Never reuse syringes. Use a new sterile syringe for each step — one for reconstitution, another for drawing doses.
💡 Avoid Air Bubbles
Tap the syringe to move bubbles to the top, then push the plunger slightly to expel air before injection.
💡 Keep Track
Label your vials with the reconstitution date and concentration. Track doses to know when to prepare a new vial.
⚠️ Never Shake
Shaking can denature the peptide, destroying its structure. Only gentle swirling is acceptable if needed.
⚠️ Temperature Matters
Never freeze reconstituted peptides. Keep refrigerated. Unreconstituted peptides can be stored frozen long-term.
Quick Reference Chart
Common reconstitution volumes and resulting concentrations
| Peptide Amount | BAC Water | Concentration | 250mcg Dose | 500mcg Dose |
|---|---|---|---|---|
| 5mg | 1mL | 5mg/mL (5000mcg/mL) | 0.05mL (5 units) | 0.10mL (10 units) |
| 5mg | 2mL | 2.5mg/mL (2500mcg/mL) | 0.10mL (10 units) | 0.20mL (20 units) |
| 10mg | 2mL | 5mg/mL (5000mcg/mL) | 0.05mL (5 units) | 0.10mL (10 units) |
| 10mg | 3mL | 3.33mg/mL (3333mcg/mL) | 0.075mL (7.5 units) | 0.15mL (15 units) |
| 15mg | 3mL | 5mg/mL (5000mcg/mL) | 0.05mL (5 units) | 0.10mL (10 units) |
📐 Understanding Syringe Units
Insulin syringes are marked in "units" — typically 100 units = 1mL. So 10 units = 0.10mL, 5 units = 0.05mL, etc. This makes measuring small volumes precise and easy.
⚠️ Research Use Only
All information provided on this page is for laboratory research and educational purposes only. Peptides discussed are not intended for human or animal use. This guide does not constitute medical advice. Always follow applicable laws and regulations. Consult qualified professionals for any research protocols.
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