- Core inputs
- Vial mg + water mL
- Core outputs
- mg/mL and mcg/mL
- Best for
- Checking dilution
How concentration is calculated
Peptide concentration is the amount of peptide divided by the liquid volume after reconstitution. A 10 mg vial in 2 mL is twice as concentrated as a 10 mg vial in 4 mL.
After concentration is known, any target dose can be converted into mL and syringe units using the dose calculator.
- 10 mg / 2 mL = 5 mg/mL
- 5 mg/mL = 5,000 mcg/mL
- More diluent means lower concentration
5 mg vial with 2 mL concentration example
A 5 mg vial mixed with 2 mL has a concentration of 2.5 mg/mL. In micrograms, that is 2,500 mcg/mL.
That concentration means every 0.1 mL contains 250 mcg, which is 10 units on a U-100 syringe.
- 5 mg / 2 mL = 2.5 mg/mL
- 2.5 mg/mL = 2,500 mcg/mL
- 0.1 mL x 2,500 mcg/mL = 250 mcg
10 mg vial with 2 mL concentration example
A 10 mg vial mixed with 2 mL has a concentration of 5 mg/mL. In micrograms, that is 5,000 mcg/mL.
That concentration means every 0.1 mL contains 500 mcg, which is also 10 units on a U-100 syringe.
- 10 mg / 2 mL = 5 mg/mL
- 5 mg/mL = 5,000 mcg/mL
- 0.1 mL x 5,000 mcg/mL = 500 mcg
Why concentration comes first
Unit markings on a syringe only tell you volume. The concentration tells you how much peptide is inside that volume.
Recording concentration alongside reconstitution date and water volume makes future dose checks much easier to audit.