Retatrutide Units Chart — mg to Syringe Units

Reading the Retatrutide units chart

A Retatrutide units chart only answers a conversion question: given a vial strength and a water volume, where on the syringe does a given dose fall? Retatrutide is sold in 8 common strengths — 5 mg, 10 mg, 12 mg, 15 mg, 20 mg, 24 mg, 30 mg, 60 mg — and each one puts the same dose at a different mark. At 2 mL a 60 mg vial is 30 mg/mL, so ten units carry 3 mg.

That difference is entirely a measurement decision. A 4 mg dose reads 13 units at 2 mL and 7 units at 1 mL — the same amount of Retatrutide either way. Spreading a dose across more units means a misread mark costs you proportionally less, which is why small doses are usually easier to handle at a lower concentration.

This is why a units figure copied from someone else is close to meaningless on its own. 13 units is a 4 mg dose only if their vial was 60 mg and they added 2 mL. Change either number and the same mark delivers something else entirely, which is exactly the mistake the chart above is meant to prevent.

Once the vial is mixed the concentration is fixed until it is finished, so write down what you added. The amounts below are example figures commonly discussed for this compound, used here to make the arithmetic concrete. Your prescriber sets yours. This page does unit conversion and record-keeping for a dose your prescriber has already set. It does not know your prescription or your product, it does not recommend a dose, and it is not medical advice.

Units on a U-100 syringe

The amounts below are example figures commonly discussed for this compound, used here to make the arithmetic concrete. Your prescriber sets yours.

Concentration

Step by step

1. Read the vial label. Confirm the strength printed on the vial. This page assumes 60 mg; if yours says something else, use the calculator above with your own number.
2. Choose the water volume. Adding 2 mL of bacteriostatic water gives 30 mg/mL. More water lowers the concentration and raises the units you draw, which is easier to read; less water does the opposite.
3. Add the water slowly. Run the water down the inside wall of the vial rather than onto the powder, then swirl until clear. Do not shake.
4. Convert your prescribed dose. Divide the dose by the concentration to get the volume, then multiply by 100 for a U-100 syringe. A 4 mg dose here is 0.133 mL, or 13 units.
5. Draw to the mark. Pull the plunger to the 13-unit mark, clear any air, and check the reading at eye level before injecting.
6. Log what you actually drew. Record the vial strength, the water you added and the units drawn, so the next dose from this vial uses the same concentration.

FAQ

How many units is 4 mg of Retatrutide from a 60 mg vial at 2 mL?

At 2 mL of bacteriostatic water a 60 mg vial is 30 mg/mL, so 4 mg is 0.133 mL — 13 units on a U-100 syringe. For reference, 10 units from this vial is 3 mg. Check the figure against your own vial label before you draw.

What if I add 1 mL instead of 2 mL?

1 mL gives 60 mg/mL instead of 30 mg/mL. The vial still contains 60 mg, so nothing about the compound changes — only the volume it is spread through. The same 4 mg dose then reads 7 units rather than 13 units.

Can I measure less than 1 unit on a U-100 syringe?

Not reliably — one unit is 0.01 mL and most barrels print half-unit marks at best. That limit bites hardest on strong vials: at 2 mL a 5 mg Retatrutide vial puts a 1 mg dose at 40 units, while a 60 mg vial puts the same dose at 3 units. Fewer marks means less room for error.

How many 4 mg doses are in a 60 mg vial?

15 full 4 mg doses, leaving 0 mg in the vial. Each of those doses is 13 units at 2 mL, or 7 units at 1 mL — but the count stays 15 either way, because the vial holds 60 mg however much water you add. Water changes the units you draw, never the compound that is there.

What does each Retatrutide vial size reach at 2 mL?

5 mg gives 2.5 mg/mL, 10 mg gives 5 mg/mL, 12 mg gives 6 mg/mL, 15 mg gives 7.5 mg/mL, 20 mg gives 10 mg/mL, 24 mg gives 12 mg/mL, 30 mg gives 15 mg/mL, 60 mg gives 30 mg/mL. That is why the same dose reads a different number of units from a different vial — the chart above resolves each combination.

Related

• Interactive reconstitution calculator
• Retatrutide reference
• All vial-size calculators

Educational only. Not medical advice. Confirm your vial strength and every dose with your prescriber or pharmacist.