PEPTIDE
EDUCATION
HUB
Everything you need to work with research peptides safely and effectively. From reconstitution to dosing — all in one place.
All content on this page is for educational and research purposes only. GeneticPeptidesUSA products are intended strictly for in-vitro laboratory use. Bodily introduction into humans or animals is strictly prohibited.
Reconstitution Basics
Lyophilized (freeze-dried) peptides must be reconstituted with Bacteriostatic Water (BAC Water) before use. Here's how to do it correctly.
Gather Your Supplies
You'll need: the peptide vial, bacteriostatic water, a syringe (1mL or 3mL), alcohol swabs, and a clean surface. Never use sterile water — BAC water contains benzyl alcohol which prevents microbial growth.
Clean the Vial Tops
Wipe both the peptide vial and BAC water vial tops with separate alcohol swabs. Let them air dry for 30 seconds — do not blow on them or touch the cleaned surface.
Draw Your BAC Water
Using your syringe, draw the desired amount of BAC water. The amount you use determines your final concentration — use the dosing calculator below to find the right volume for your needs.
Inject Slowly Into the Peptide Vial
Insert the needle into the peptide vial at an angle, aiming at the glass wall — not directly at the powder. Push the plunger slowly so the water runs down the side. Avoid creating bubbles or agitating the powder forcefully.
Gently Swirl — Never Shake
Slowly rotate the vial between your fingers until the powder is fully dissolved. The solution should be clear with no visible particles. Never shake — this can degrade the peptide chain.
Label and Refrigerate
Label your vial with the peptide name, concentration, and date reconstituted. Store immediately in the refrigerator (36–46°F). Reconstituted peptides are typically stable for 30–60 days when refrigerated.
Dosing Calculator
Use these calculators to determine your peptide concentration and draw volume. All values are for research reference only.
💉 Concentration Calculator
How many mcg/mL will your vial be after adding BAC water?
🎯 Draw Volume Calculator
How much should you draw for a specific dose?
Syringe Guide
Choosing the right syringe is essential for accurate dosing. Here's what the markings mean and which to use.
U-100 Insulin Syringe
1mL / 100 units
- Each unit = 0.01mL
- Best for small, precise doses
- Available in 28–31 gauge
- Most common for peptide research
3mL Luer Lock
3mL / 60 units
- Each small line = 0.1mL
- Better for larger volume draws
- Used with separate needle
- Good for BAC water transfer
0.5mL Insulin Syringe
0.5mL / 50 units
- Each unit = 0.01mL
- Shorter needle — less intimidating
- Great for small dose volumes
- 29–31 gauge options
U-100 Syringe Quick Reference
| Units (marks) | Volume (mL) | Example @ 2500 mcg/mL |
|---|---|---|
| 5 units | 0.05mL | 125 mcg |
| 10 units | 0.10mL | 250 mcg |
| 20 units | 0.20mL | 500 mcg |
| 25 units | 0.25mL | 625 mcg |
| 50 units | 0.50mL | 1250 mcg |
| 100 units | 1.00mL | 2500 mcg |
Storage Do's & Don'ts
Improper storage is the #1 cause of peptide degradation. Follow these guidelines to protect your compounds.
Do's
- Store lyophilized peptides at room temperature (up to 3 months) or refrigerated (up to 2 years)
- Refrigerate reconstituted peptides at 36–46°F (2–8°C) immediately after mixing
- Keep vials away from light — store in a dark cabinet or drawer
- Use bacteriostatic water for reconstitution — it inhibits microbial growth
- Label everything with peptide name, concentration, and reconstitution date
- Freeze for long-term storage — lyophilized peptides can be frozen for 2+ years
- Let vials come to room temp before opening to prevent condensation
Don'ts
- Don't freeze reconstituted peptides — freeze/thaw cycles break down the peptide chain
- Don't shake vials — gentle swirling only; shaking causes aggregation
- Don't expose to heat — never store near ovens, in hot cars, or in direct sunlight
- Don't use sterile water for reconstitution — it has no antimicrobial protection
- Don't use reconstituted peptides after 60 days — when in doubt, discard
- Don't touch the vial top after swabbing with alcohol
- Don't transfer to a new container — original vials provide the best protection
Supplies Checklist
Check off everything you need before starting your research. Click items to mark them as ready.
Essential Supplies
Recommended Extras
Reading Your COA
A Certificate of Analysis (COA) is your proof of purity and identity. Every GeneticPeptidesUSA compound ships with a third-party COA. Here's how to read it.
Product Identity
Confirms the compound is what it's labeled as. Look for the peptide name, molecular formula, and CAS number. These should match the product you ordered exactly.
Purity Percentage
Shown as a percentage — ours are 99%+. This is measured by HPLC (High Performance Liquid Chromatography). Anything below 98% is considered low quality for research use.
Molecular Weight
Measured in Daltons (Da) or g/mol. This confirms the correct peptide chain length. Compare this to the known molecular weight for your compound to verify identity.
Testing Lab
Should be an independent, third-party laboratory — not the manufacturer. Look for a lab name, address, and accreditation number. We never test in-house.
Batch / Lot Number
Every batch has a unique ID. This lets you trace the exact production run your compound came from. Keep this number with your research records.
Test Date
Confirms the COA is current. Older COAs (1+ year) may not reflect the current batch. All our COAs are batch-specific and current at time of shipping.
Research FAQ
It depends on your desired concentration. A common approach for a 5mg vial is to add 2mL of BAC water, giving you a concentration of 2,500 mcg/mL. Use our dosing calculator above to find the right amount for your specific vial size and dose.
Sterile water can technically be used for reconstitution but it lacks the preservative (benzyl alcohol) found in BAC water. Without it, microbial contamination can occur rapidly. BAC water extends the usable life of a reconstituted peptide significantly. Always use BAC water for research applications.
When stored properly in the refrigerator (36–46°F), most reconstituted peptides remain stable for 30–60 days. Some may last longer, but as a general rule, discard after 60 days. Never freeze a reconstituted peptide — it degrades the compound.
Lyophilization is a freeze-drying process that removes all moisture from the peptide while preserving its molecular structure. It results in a white powder that is highly stable for storage and shipping. Before use in research, the powder must be reconstituted with bacteriostatic water.
Not necessarily. Some peptides dissolve slower than others. Try gently warming the vial in your hands while slowly swirling. If there are still small visible particles after 5–10 minutes, do not proceed — the compound may be compromised or improperly reconstituted. Contact us if you suspect a product issue.
For research applications, 28–31 gauge needles on U-100 insulin syringes are most common. Higher gauge numbers mean thinner needles. Thinner needles (30–31g) are finer and more precise. For drawing from a vial, 27–28g is common. For smaller volume draws, 29–31g is preferred.
Ask the Research Assistant
Have a question about peptides, reconstitution, dosing, or our products? Our AI research assistant is here to help — available 24/7.
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