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Reconstitution Reference Guide

5 min readUpdated 2026Research reference

For research use only. This article is educational reference material. The compound discussed is supplied strictly for in vitro laboratory research and is not for human consumption or therapeutic use.

General Rules for Peptide Reconstitution

  • Sterility First: Always wipe the top of both the bacteriostatic (BAC) water vial and the peptide vial with an alcohol prep pad before inserting any needles.
  • The Gentle Touch: Never spray the BAC water directly onto the lyophilized (freeze-dried) peptide powder. Aim the needle at the inside glass wall of the vial and let the diluent trickle down slowly.
  • Do Not Shake: Swirl the vial gently in a circular motion until the powder is completely dissolved. Shaking can shear and destroy fragile peptide bonds.
  • Storage: Once reconstituted, almost all peptides must be stored in the refrigerator (2°C to 8°C / 36°F to 46°F) and protected from light.

Reconstitution Chart

Below is a standardized guide using standard Bacteriostatic Water (0.9% Benzyl Alcohol), with the notable exception of IGF-1 LR3. Volume choices (1ml vs. 2ml) are based on standard vial sizes and common dosing comfort.

Peptide Vial Size Recommended Diluent Volume Notes / Special Instructions
GHK-Cu 100 mg 2.0 mL – 3.0 mL Can be stinging/painful if too concentrated. Higher volume of BAC water helps dilute the sting. Turns a deep blue colour naturally.
NAD+ 500 mg 2.0 mL – 3.0 mL Massive amount of raw powder. Needs a larger volume of BAC water to fully dissolve without falling out of solution.
MOTS-c 10 mg 1.0 mL – 2.0 mL Highly fragile. Can sometimes look cloudy initially; give it time to sit and dissolve naturally.
BPC-157 5 mg 2.0 mL Very stable and robust peptide. Standard 2mL makes math easy (e.g., 250mcg per 10 units on a U-100 syringe).
CJC-1295 (No DAC) 5 mg 2.0 mL Often blended with Ipamorelin. Degrades relatively quickly once reconstituted; use within 2–3 weeks.
CJC-1295 (With DAC) 5 mg 2.0 mL Has a much longer half-life in the body, but reconstitution mechanics remain the same as No DAC.
Tesamorelin 5 mg 1.0 mL – 2.0 mL Quite fragile. Often prescribed with sterile water, but researchers use BAC water for multi-dose vial longevity.
Ipamorelin 5 mg 2.0 mL Fairly stable, commonly reconstituted at 2mL for precise, small mcg dosing.
Wolverine Blend 10 mg 2.0 mL Typically a 1:1 blend of BPC-157 (5mg) and TB-500 (5mg). Treat with the same care as TB-500.
Retatrutide 10 mg 1.0 mL – 2.0 mL As a larger GLP-1/GIP/GCG tri-agonist, let it sit for a few minutes after adding water to dissolve completely.
TB-500 (Thymosin Beta-4) 5 mg 2.0 mL Highly sensitive to heat and vigorous shaking.
PT-141 (Bremelanotide) 10 mg 2.0 mL Very stable in solution, but higher concentration allows for smaller volume injections.
Glow Blend 70 mg 2.0 mL – 3.0 mL Typically a high-mg custom blend (often containing GHK-Cu, etc.). Requires more diluent due to high powder mass.
IGF-1 LR3 1 mg 1.0 mL (0.6% Acetic Acid) CRITICAL: Standard BAC water can cause IGF-1 LR3 to degrade or stick to the glass. Reconstitute with 0.6% Acetic Acid first, then can be optionally diluted further with BAC water right before use.
Melanotan 2 10 mg 2.0 mL Extremely stable peptide. 2mL allows for highly accurate micro-dosing to avoid nausea side effects.

Deep-Dive on Complex Peptides

1. The High-Mass Powders (NAD+ 500mg & Glow 70mg)

When dealing with vials containing massive amounts of raw powder like NAD+, the powder itself takes up physical displacement volume inside the vial.

  • Add your BAC water slowly.
  • If you add 2mL of water, the final volume might look closer to 2.2mL because of the dissolved mass. Don't panic; this is normal displacement.

2. IGF-1 LR3 (The Exception to the Rule)

IGF-1 LR3 is highly unstable in a standard abstract pH environment.

  • The Method: Researchers use 0.6% Acetic Acid to reconstitute the 1mg vial. This keeps the environment acidic, ensuring the peptide remains stable for months in the fridge.
  • If Acetic Acid is unavailable, some use plain Bacteriostatic water, but the potency window drops drastically (often to just a few days).

3. GHK-Cu (The "Copper Blue" Stinger)

GHK-Cu is a copper peptide, meaning it will turn a vivid, beautiful sapphire blue almost instantly upon contact with water. Because copper peptides are notorious for causing a localized "burning" or stinging sensation post-injection, using 2.5mL or 3mL of BAC water is a common researcher trick to dilute the concentration and mitigate the bite.

Quick Math Reference (For U-100 Syringes)

To find your dosage, use this universal formula:

Example using BPC-157 (5mg) reconstituted with 2mL of water:

5×10002×100=5000200=25 mcg per unit

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  • Therefore, a 250mcg dose = 10 units on a standard insulin syringe.