This FAQ supports the canonical peptide calculator. It explains how the math works, where U-100 assumptions come from, and why concentration changes every syringe-unit answer.
It first calculates concentration in mg per mL, then divides that value by 100 because a U-100 syringe represents 100 units per mL. The target amount is then divided by the amount per unit to produce the syringe mark.
Because concentration changes the answer. A 250 mcg target at 1 mg/mL takes more units than 250 mcg at 5 mg/mL because each unit contains a different amount of peptide.
No. On U-100 insulin syringes, one unit is always 0.01 mL. Smaller syringes change readability and maximum capacity, not the amount represented by a single unit.
That is usually a readability warning rather than a clinical statement. Consider whether a lower concentration or a smaller-capacity syringe would make the measurement easier to read and repeat consistently.
No. They are sourced or explicitly labeled example setups used to demonstrate concentration math. They should be treated as calculator context only, not as a recommended protocol.
Confirms the fixed U-100 insulin syringe standard of 100 units per mL.
Supports the safety framing around sterile handling and syringe selection.