Quick math example
A 10 mg vial mixed with 2 mL gives 5 mg/mL. A 2 mg dose is 0.4 mL, which equals 40 units on a U-100 syringe.
10 mg retatrutide vial examples
A 10 mg vial in 2 mL gives 5 mg/mL. A 2 mg dose is 0.4 mL, or 40 units on a U-100 syringe.
A 4 mg dose at the same concentration is 0.8 mL, or 80 units.
- 10 mg / 2 mL = 5 mg/mL
- 2 mg = 2,000 mcg → 0.4 mL = 40 units
- 4 mg = 4,000 mcg → 0.8 mL = 80 units
Where 10 mg sits in the retatrutide dose range
Retatrutide doses in published trial data span a wide range — from 0.5 mg in the lowest-dose arms to 12 mg in the highest. A 10 mg vial is sized to cover most of the early-to-mid titration window in a single reconstitution, without committing to the larger handling volume of a bigger vial.
At 5 mg/mL (10 mg in 2 mL), each 1 mg of dose is exactly 0.2 mL or 20 units on a U-100 syringe. That makes the per-dose math memorable: 2 mg = 40 units, 4 mg = 80 units, 6 mg = 120 units. Higher doses begin to require draws larger than a standard 1 mL insulin syringe, at which point a higher concentration (less BAC water) makes the draw fit.
- Covers most early titration doses (0.5–6 mg)
- At 5 mg/mL, 1 mg = exactly 20 units — clean stepwise math
- Above ~6 mg per dose, consider 1.5 mL of BAC water to keep draws under 1 mL
How the retatrutide calculation works
Retatrutide doses are typically discussed in milligrams while many vials and syringes require thinking in mg, mcg, mL, and units at the same time. The calculator handles all four conversions for you.
Concentration is solved first, then your target dose is divided by that concentration to return the draw volume and matching syringe units.
- 10 mg equals 10,000 mcg
- 10,000 mcg / 2 mL = 5,000 mcg per mL
- 2,000 mcg / 5,000 mcg per mL = 0.4 mL
Re-check the math when anything changes
Recalculate whenever vial size, BAC water amount, target dose, syringe type, or syringe capacity changes. Saving the setup in PepSync prevents re-entering the same details every cycle.