20 units on an insulin syringe
20 units on a U-100 insulin syringe is 0.2 mL. On a 0.3 mL syringe that is line 20, counting one line per unit.
20 units = 0.2 mL
How much is in 20 units?
That depends on how the vial was mixed. Here is what 20 units carry for some common mixes:
| Vial mix | Strength | In 20 units |
|---|---|---|
| 5 mg vial + 1 mL water | 5 mg/mL | 1 mg |
| 5 mg vial + 2 mL water | 2.5 mg/mL | 0.5 mg |
| 10 mg vial + 1 mL water | 10 mg/mL | 2 mg |
| 10 mg vial + 2 mL water | 5 mg/mL | 1 mg |
| 10 mg vial + 3 mL water | 3.33 mg/mL | 0.667 mg |
| 20 mg vial + 2 mL water | 10 mg/mL | 2 mg |
Drawing exactly 20 units
- Use the smallest syringe that fits: 0.3 mL, 0.5 mL, 1 mL all work, and the 0.3 mL is easiest to read.
- Pull a little past 20, tap the barrel so bubbles rise, then push back to the 20 line.
- Read the line at the top edge of the dark stopper, not the bottom.
Is 20 units right for your vial?
Answer 4 quick taps and see exactly how many units to draw for your dose, on your syringe.
Calculate my unitsQuestions
How many mL is 20 units on an insulin syringe?
0.2 mL on a U-100 syringe.
Which syringe is best for 20 units?
The 0.3 mL (30 unit) syringe, because its lines are spaced widest for small volumes.