Two directionsThe converter above goes from units back to milligrams, which is useful for checking a measurement. To go from a dose in mg to units, use the dosage calculator.
How many units of retatrutide for each trial dose
Find your concentration (mg per mL) in the first column. The number in each cell is the units to draw on a U-100 syringe.
| mg/mL | 1 mg | 2 mg | 4 mg | 6 mg | 8 mg | 9 mg | 12 mg |
|---|---|---|---|---|---|---|---|
| 2.5 | 40 | 80 | >100 | >100 | >100 | >100 | >100 |
| 3.33 | 30 | 60.1 | >100 | >100 | >100 | >100 | >100 |
| 4 | 25 | 50 | 100 | >100 | >100 | >100 | >100 |
| 5 | 20 | 40 | 80 | >100 | >100 | >100 | >100 |
| 6.67 | 15 | 30 | 60 | 90 | >100 | >100 | >100 |
| 8 | 12.5 | 25 | 50 | 75 | 100 | >100 | >100 |
| 10 | 10 | 20 | 40 | 60 | 80 | 90 | >100 |
| 12 | 8.3 | 16.7 | 33.3 | 50 | 66.7 | 75 | 100 |
| 15 | 6.7 | 13.3 | 26.7 | 40 | 53.3 | 60 | 80 |
Cells marked ">100" need more than a full 1 mL syringe. A dose of more than 100 units has to be measured some other way, or the vial mixed with less water.
Retatrutide dosage in mL by concentration
| mg/mL | 1 mg | 2 mg | 4 mg | 6 mg | 8 mg | 9 mg | 12 mg |
|---|---|---|---|---|---|---|---|
| 2.5 | 0.4 | 0.8 | 1.6 | 2.4 | 3.2 | 3.6 | 4.8 |
| 3.33 | 0.3 | 0.601 | 1.201 | 1.802 | 2.402 | 2.703 | 3.604 |
| 4 | 0.25 | 0.5 | 1 | 1.5 | 2 | 2.25 | 3 |
| 5 | 0.2 | 0.4 | 0.8 | 1.2 | 1.6 | 1.8 | 2.4 |
| 6.67 | 0.15 | 0.3 | 0.6 | 0.9 | 1.199 | 1.349 | 1.799 |
| 8 | 0.125 | 0.25 | 0.5 | 0.75 | 1 | 1.125 | 1.5 |
| 10 | 0.1 | 0.2 | 0.4 | 0.6 | 0.8 | 0.9 | 1.2 |
| 12 | 0.083 | 0.167 | 0.333 | 0.5 | 0.667 | 0.75 | 1 |
| 15 | 0.067 | 0.133 | 0.267 | 0.4 | 0.533 | 0.6 | 0.8 |
Which vial and water give each concentration
| mg/mL | Examples (vial + water) | mg in 10 units |
|---|---|---|
| 2.5 | 5 mg + 2 mL, 10 mg + 4 mL | 0.25 |
| 3.33 | 10 mg + 3 mL | 0.333 |
| 4 | 10 mg + 2.5 mL, 20 mg + 5 mL | 0.4 |
| 5 | 5 mg + 1 mL, 10 mg + 2 mL, 15 mg + 3 mL | 0.5 |
| 6.67 | 10 mg + 1.5 mL, 20 mg + 3 mL | 0.667 |
| 8 | 24 mg + 3 mL | 0.8 |
| 10 | 10 mg + 1 mL, 20 mg + 2 mL, 24 mg + 2.4 mL, 30 mg + 3 mL | 1 |
| 12 | 24 mg + 2 mL, 30 mg + 2.5 mL | 1.2 |
| 15 | 30 mg + 2 mL | 1.5 |
Converting by hand
Three short formulas cover every case:
- mL = dose (mg) ÷ concentration (mg/mL). 4 mg at 5 mg/mL is 0.8 mL.
- Units = mL × 100. 0.8 mL is 80 units on a U-100 syringe.
- mg = units ÷ 100 × concentration. 30 units at 10 mg/mL is 3 mg.
The factor of 100 only applies to U-100 insulin syringes, which are marked with 100 units per 1 mL. It does not mean "100 units of the drug". Units here are a measure of volume on the syringe, not of the drug's strength.
Related
- Dosage calculatormg → units for your exact vial
- Reconstitution mathChoosing the water volume
- Dosage chartThe trial escalation schedules
Frequently asked questions
How many mg is 10 units of retatrutide?
10 units is 0.1 mL. At 5 mg/mL that is 0.5 mg, and at 10 mg/mL it is 1 mg. The answer always depends on the concentration in the vial.
How many units is 4 mg of retatrutide?
At 5 mg/mL it is 80 units. At 10 mg/mL it is 40 units. At 4 mg/mL it is 100 units, a full 1 mL syringe.
Is a unit the same as a mg?
No. On an insulin syringe a unit is a volume: one hundredth of a millilitre. How many milligrams it holds depends on how concentrated the solution is.