Concentration (mcg/mL)
Also known as: concentration · peptide concentration
The amount of peptide mass per unit volume of reconstituted solution, typically expressed as micrograms (mcg) or milligrams (mg) per milliliter.
Concentration is the single number that converts a peptide mass dose (what the protocol specifies) into a syringe volume (what you actually draw). A 10mg vial reconstituted with 5mL BAC water yields 2mg/mL concentration — a 0.25mg dose is 0.125mL, or 12.5 units on a U-100 insulin syringe.
Higher concentration (less BAC water for the same peptide mass) means smaller injection volumes, which is more comfortable but requires more precise unit measurement. Lower concentration means easier measurement but larger injection volumes. Protocol documentation should always specify both the reconstitution volume and the resulting concentration so dose math is unambiguous.
5mg BPC-157 + 2.5mL BAC water = 2mg/mL. A 250mcg dose = 0.125mL = 12.5 units.
Related Terms
Reconstitution
The process of dissolving a lyophilized peptide powder in bacteriostatic water or saline to produce an injectable solution.
Units (Insulin Syringe)
The volumetric graduations on a U-100 insulin syringe, where 100 units equals 1mL of solution.
Drawing Dose
The technique of extracting a measured dose of reconstituted peptide from the vial into an insulin syringe.
BAC Water
Sterile water containing 0.9% benzyl alcohol, used to reconstitute lyophilized peptides for multi-dose vial use.
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