The Formula: How To Calculate Peptide Reconstitution
Peptide dosing calculations rely on determining the concentration of dissolved peptide per unit volume of bacteriostatic water:
2. Concentration (mcg/ml) = Total Micrograms ÷ Volume of Water (ml)
3. Dose Volume (ml) = Desired Dose (mcg) ÷ Concentration (mcg/ml)
4. Syringe Units = Dose Volume (ml) × Syringe Calibration (100 units/ml for U-100)
A 5mg vial of BPC-157 reconstituted with 2ml of bacteriostatic water for a 250mcg dose on a U-100 syringe:
• Vial Micrograms = 5 mg × 1,000 = 5,000 mcg
• Concentration = 5,000 mcg ÷ 2 ml = 2,500 mcg/ml
• Dose Volume = 250 mcg ÷ 2,500 mcg/ml = 0.10 ml
• Units on U-100 Syringe = 0.10 ml × 100 units/ml = 10 Units
Frequently Asked Questions
How many micrograms (mcg) are in a milligram (mg)?
There are exactly 1,000 micrograms (mcg) in 1 milligram (mg). For example, 5mg = 5,000mcg, and 10mg = 10,000mcg.
How should reconstituted peptides be stored?
Once reconstituted with bacteriostatic water, peptide vials must be kept refrigerated at 2°C to 8°C (36°F to 46°F), shielded from light, and handled gently without violent shaking to preserve molecular peptide bonds.
Why does adding more bacteriostatic water make dosing easier?
Adding more water dilutes the solution, meaning each tick mark on the syringe contains fewer micrograms. This makes measuring very small microgram doses much easier and reduces measurement errors on small-volume syringes.