Instructions & Storage.
How to properly handle, reconstitute, and store lyophilized peptides. Step-by-step guides, dosing math, and shelf-life reference.
For Research Use Only. The information below is provided for properly handling lyophilized peptides in a laboratory research context. Not intended for human or animal use.
What You'll Need.
Gather these materials before opening any vial. Working in a clean environment helps preserve peptide integrity and prevents contamination.
Peptide Vial
Lyophilized compound from HaloAmino
BAC Water
30mL bacteriostatic water for reconstitution
Syringes
Sterile insulin syringes (1mL, 100-unit)
Alcohol Swabs
For sterilizing vial tops before puncturing
How to Reconstitute.
Reconstitution means dissolving the freeze-dried peptide powder into liquid form using bacteriostatic water. Follow these steps carefully to preserve the integrity of the compound.
Wash Hands & Clean Work Surface
Thoroughly wash your hands with soap and water. Wipe down your workspace with disinfectant. Lay out all materials so you can work efficiently without contamination.
A clean, dust-free environment makes a noticeable difference in long-term peptide stability.
Sterilize Both Vial Tops
Use an alcohol swab to thoroughly clean the rubber stopper on top of both the peptide vial and the BAC water vial. Let them air-dry for 10–15 seconds before puncturing.
Draw BAC Water Into Syringe
Insert a sterile syringe into the BAC water vial. Pull back the plunger to draw your desired amount of water (typically 2mL for most peptides — see the Dosing Math section below for specifics).
The amount of BAC water you use determines your final concentration. More water = lower concentration per unit.
Inject BAC Water Into Peptide Vial
Insert the syringe into the peptide vial at a 45-degree angle. Slowly inject the BAC water down the side of the vial — never directly onto the powder. Injecting too fast or directly on the powder can damage the peptide structure.
Always inject slowly along the inside wall of the vial. This protects the delicate peptide structure from mechanical damage.
Let It Dissolve — Don't Shake
Allow the powder to dissolve on its own. This usually takes 30 seconds to 2 minutes. If needed, gently swirl the vial — never shake vigorously, as this can break the peptide bonds and reduce potency.
Shaking, vortexing, or aggressive agitation damages peptides. Patience here = better stability.
Inspect & Label the Vial
The solution should be completely clear with no particles. (Exception: GHK-Cu will have a noticeable blue color — that's normal and expected.) Write the reconstitution date directly on the vial label so you can track shelf life.
Refrigerate Immediately
Once reconstituted, store the vial in the refrigerator at 36–46°F (2–8°C). Keep it upright in a sealed container away from light. Use within 2–4 weeks for best stability.
Dosing Math.
The amount of BAC water you reconstitute with determines how much peptide ends up in each syringe unit. Here's a reference chart for common HaloAmino vial sizes.
| Vial Size | BAC Water Added | Per Unit on Syringe | Common Use |
|---|---|---|---|
| 5mg vial | 1mL | 50 mcg/unit | Concentrated, fewer units per dose |
| 5mg vial | 2mL | 25 mcg/unit | Standard concentration |
| 5mg vial | 3mL | 16.7 mcg/unit | Diluted, more precise measurement |
| 10mg vial | 2mL | 50 mcg/unit | Common for higher-dose compounds |
| 10mg vial | 3mL | 33 mcg/unit | Slightly diluted option |
| 50mg vial | 3mL | 167 mcg/unit | For larger compounds like GHK-Cu |
| 50mg vial | 5mL | 100 mcg/unit | Cleaner math for GHK-Cu protocols |
The Formula: Total Peptide (mcg) ÷ BAC Water (mL) ÷ 100 = mcg per insulin syringe unit. Insulin syringes have 100 units per mL.
Storage Guidelines.
Proper storage is the single biggest factor in peptide stability. Follow these guidelines to maximize shelf life and preserve potency.
Do's & Don'ts.
A quick reference for what to do — and what to avoid — when handling lyophilized peptides.
Do
- Work on a clean, disinfected surface
- Sterilize vial tops with alcohol swabs before each use
- Inject BAC water slowly down the vial wall
- Let the peptide dissolve passively or with gentle swirls
- Label vials with the reconstitution date
- Refrigerate reconstituted vials immediately
- Use sterile syringes for each withdrawal
- Inspect the solution for clarity before each use
Don't
- Shake or vortex the vial — this damages peptide bonds
- Inject BAC water directly onto the peptide powder
- Freeze reconstituted solutions — ice crystals damage peptides
- Expose vials to direct sunlight or heat for extended periods
- Reuse syringes between vials (contamination risk)
- Use a vial that shows cloudiness, particles, or color changes (except GHK-Cu's blue)
- Mix multiple peptides in the same vial without research justification
- Store reconstituted vials past 4 weeks even if they look fine
Handling FAQ.
-
Why can't I use regular tap water or distilled water?
Regular water doesn't have the 0.9% benzyl alcohol that BAC water does. Without that preservative, your reconstituted peptide will support bacterial growth within hours and become unusable. BAC water keeps the solution stable for the full 2–4 week window. -
How long can a reconstituted vial last?
When refrigerated properly at 36–46°F (2–8°C) and protected from light, most peptides remain stable for 2–4 weeks after reconstitution. Some peptides (like GHK-Cu) can last slightly longer; others (like BPC-157) are best used within 2–3 weeks for peak stability. -
My vial has a small amount of powder stuck to the side. Is that normal?
Yes. Small amounts of residual powder on the vial walls are completely normal — that's just how lyophilization works. After reconstitution, swirl gently to dissolve any remaining particles. If the solution becomes fully clear (or fully blue for GHK-Cu), you're good. -
Can I freeze reconstituted peptides to extend shelf life?
No. Freezing reconstituted peptides causes ice crystals to form, which physically damage the peptide bonds and reduce potency. Once a peptide is in liquid form, keep it refrigerated only. Lyophilized (unreconstituted) vials can be frozen for extended shelf life. -
What if my peptide arrived loose or "fluffy"-looking?
Lyophilized peptides can appear as a solid puck, a loose powder, or a fluffy/wispy mass depending on the compound and freeze-drying conditions. All three appearances are completely normal and have no effect on potency. What matters is what's in the vial — and our COAs verify that. -
Can I mix two different peptides in one syringe?
Some peptides are commonly studied together (like CJC-1295 + Ipamorelin), and we sell those as pre-mixed blends for that reason. For most other compounds, it's better to keep them in separate vials so you can independently control dosing and avoid potential stability or interaction issues. -
Why does GHK-Cu turn the BAC water blue?
GHK-Cu is a copper-bound peptide — the copper gives it that blue color when dissolved. It's a natural property of the compound and confirms the copper-peptide bond is intact. Not a sign of contamination; in fact, it's a sign your GHK-Cu is the real deal. -
How do I know if my peptide has gone bad?
Signs of degradation include: cloudiness or visible particles in the solution, unexpected color changes (other than GHK-Cu's normal blue), an unusual smell, or solution that doesn't fully dissolve after several minutes. When in doubt, discard the vial — peptides are too valuable to risk using when compromised.
Important Notice
All instructions on this page are provided for handling lyophilized peptides in a laboratory research context only. HaloAmino products are sold strictly for research use and are not intended for human or animal consumption, injection, or any non-research application. This guide does not constitute medical advice. By using HaloAmino products, you acknowledge and agree to our Legal Notice & Disclaimers and Terms of Service.