25 units on an insulin syringe
25 units on a U-100 insulin syringe is 0.25 mL. On a 0.3 mL syringe that is line 25, counting one line per unit.
25 units = 0.25 mL
How much is in 25 units?
That depends on how the vial was mixed. Here is what 25 units carry for some common mixes:
| Vial mix | Strength | In 25 units |
|---|---|---|
| 5 mg vial + 1 mL water | 5 mg/mL | 1.25 mg |
| 5 mg vial + 2 mL water | 2.5 mg/mL | 0.625 mg |
| 10 mg vial + 1 mL water | 10 mg/mL | 2.5 mg |
| 10 mg vial + 2 mL water | 5 mg/mL | 1.25 mg |
| 10 mg vial + 3 mL water | 3.33 mg/mL | 0.833 mg |
| 20 mg vial + 2 mL water | 10 mg/mL | 2.5 mg |
Drawing exactly 25 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 25, tap the barrel so bubbles rise, then push back to the 25 line.
- Read the line at the top edge of the dark stopper, not the bottom.
Is 25 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 25 units on an insulin syringe?
0.25 mL on a U-100 syringe.
Which syringe is best for 25 units?
The 0.3 mL (30 unit) syringe, because its lines are spaced widest for small volumes.