CJC-1295 no DAC reconstitution explained: supplies, mixing ratios, storage, and dosing math for research use, plus safety notes and common mistakes.
CJC-1295 no DAC reconstitution is the process of adding bacteriostatic water to a vial of lyophilized (freeze-dried) peptide powder so it can be measured and handled as a liquid. In practice, you swab the stoppers, inject the water slowly down the inside glass wall instead of onto the powder, swirl gently, and then refrigerate the vial. CJC-1295 without DAC is a research chemical and is not FDA-approved for human use in the United States, so the steps below are for laboratory and educational reference only.
What CJC-1295 No DAC Is and Why Reconstitution Matters
CJC-1295 without DAC is also known as mod GRF (1-29). It is a synthetic growth hormone-releasing hormone analog with a short cjc 1295 no dac half-life, which is why it is usually discussed alongside more frequent handling schedules than the DAC version.
The "no DAC" label matters. DAC stands for Drug Affinity Complex, a modification that binds the peptide to albumin and stretches its activity window from minutes to days. Without that modification, the peptide clears quickly.
Because the raw material ships as a powder, reconstitution is the only way to turn a measured mass of peptide into a solution you can draw with a syringe. Get the water volume wrong and every later measurement is off.
Supplies Needed for CJC-1295 No DAC Reconstitution
Gather everything before you open anything. Working in a clean, uncluttered space reduces the chance of contamination.
- Lyophilized CJC-1295 no DAC vial
- Bacteriostatic water (0.9% benzyl alcohol) — not plain sterile water if you plan to store the vial
- Alcohol swabs
- Insulin syringes with fixed needles, typically 0.5–1 mL and 29–31 gauge
- Clean gloves and a sharps container
Bacteriostatic water is the standard diluent because the benzyl alcohol slows bacterial growth, which lets a reconstituted vial stay usable for weeks rather than hours.
Step-by-Step Reconstitution Instructions
1. Prepare the vials
Let both vials reach room temperature. Wipe the rubber stoppers of the peptide vial and the water vial with separate alcohol swabs, then let them air-dry for a few seconds.
2. Draw the water
Pull the plunger back to your target volume of air, inject that air into the bacteriostatic water vial, then invert it and withdraw the liquid. Equalizing pressure makes the draw much easier.
3. Add water to the powder
Insert the needle at a slight angle and aim the stream at the inside wall of the glass, not directly at the powder cake. Direct contact can damage the peptide and create foam that is slow to dissolve. A common starting point for cjc-1295 no dac dosage planning is 1–2 mL of water per 2 mg vial, though the exact ratio depends on the measuring equipment you have.
4. Mix gently
Roll the vial between your palms or swirl it in a slow circle. Never shake it. The powder usually dissolves within a minute or two; if it does not, let the vial sit and swirl again.
5. Label and refrigerate
Write the date and the final concentration on the vial, then store it upright at 2–8 °C (36–46 °F).
Mixing Ratios and Concentration Math
Concentration is simply the total peptide mass divided by the total volume of water added. The table below shows several common combinations.
| Vial size | Water added | Concentration | Peptide per 0.1 mL |
|---|---|---|---|
| 2 mg | 1 mL | 2,000 mcg/mL | 200 mcg |
| 2 mg | 2 mL | 1,000 mcg/mL | 100 mcg |
| 5 mg | 2 mL | 2,500 mcg/mL | 250 mcg |
| 5 mg | 5 mL | 1,000 mcg/mL | 100 mcg |
Pre-made blends change the arithmetic because two peptides share a single vial. For example, cjc-1295 no dac ipamorelin 10mg blend dosage math has to treat the 10 mg as the combined mass of both peptides, not the mass of each one.
A comparison such as tesamorelin vs cjc-1295 no dac, by contrast, is a question about structure and studied use cases rather than about mixing ratios.
Storage, Stability, and Common Mistakes
Reconstituted peptide is far less stable than dry powder. Keep the vial refrigerated, protect it from light, and avoid repeated temperature swings.
- Shaking the vial instead of swirling it
- Squirting water directly onto the powder cake
- Using plain sterile water for a vial you intend to store
- Reusing needles or swabs
- Forgetting to label the concentration and the date
Discard any solution that turns cloudy, shows visible particles, or changes color. Powder kept dry, cold, and away from light generally lasts far longer than the same peptide once it is in liquid form.
CJC-1295 DAC vs No DAC: What Changes After Mixing
The reconstitution steps are identical, but the two versions behave very differently once they are in solution. The table below summarizes the practical differences.
| Feature | CJC-1295 with DAC | CJC-1295 no DAC |
|---|---|---|
| Half-life | Roughly 6–8 days | Roughly 30 minutes |
| Albumin binding | Yes | No |
| Typical research handling frequency | Once weekly or less | Multiple times daily |
| FDA approval for human use | No | No |
People comparing cjc-1295 dac vs no dac usually focus on that half-life gap, since it drives everything from handling frequency to how quickly a vial is used up.
Neither form is approved by the FDA for human use, and neither is a substitute for medical care. Anyone considering peptide use should talk with a licensed healthcare professional first.
Frequently Asked Questions
How much bacteriostatic water do I add to a 2 mg CJC-1295 no DAC vial?
Most people add 1 to 2 mL of bacteriostatic water to a 2 mg vial. Using 1 mL gives a concentration of 2,000 mcg/mL, while 2 mL gives 1,000 mcg/mL. The right volume depends on how finely your syringe can measure, since smaller volumes mean larger concentration steps.
How long does reconstituted CJC-1295 no DAC last in the refrigerator?
Reconstituted peptide stored at 2–8 °C with bacteriostatic water is commonly used within a few weeks. Plain sterile water shortens that window considerably because it contains no preservative. Throw the vial away if the liquid turns cloudy, shows particles, or changes color.
Should CJC-1295 no DAC be reconstituted with bacteriostatic water or sterile water?
Bacteriostatic water is the usual choice for a vial you plan to use more than once, because the benzyl alcohol in it slows bacterial growth. Sterile water contains no preservative and is generally reserved for single-use situations. Plain saline is not a recommended diluent for peptide storage.
This page provides educational research information and does not replace medical advice, diagnosis, or treatment.