How do U-40 syringe units convert to mL?
On a U-40 syringe 40 units = 1 mL, so 1 unit = 0.025 mL. 4 units = 0.1 mL, 10 units = 0.25 mL and 20 units = 0.5 mL. A U-40 unit is 2.5 times the volume of a U-100 unit.
The math
mL = U-40 units ÷ 40 U-40 units = mL × 40 U-100 units = U-40 units × 2.5
| U-40 units | mL | Same volume on U-100 |
|---|---|---|
| 1 | 0.025 | 2.5 units |
| 4 | 0.1 | 10 units |
| 10 | 0.25 | 25 units |
| 20 | 0.5 | 50 units |
| 40 | 1 | 100 units |
Math only, not medical advice. This page converts numbers; it does not recommend any compound or amount.
Draw to
10 units
= 0.1 mL · concentration 2.5 mg/mL (2500 mcg/mL) · 20 draws per vial
Concentration = 5 mg ÷ 2 mL = 2.5 mg/mL Volume = 250 mcg ÷ 2500 mcg/mL = 0.1 mL Units = 0.1 mL × 100 (U-100) = 10 units
Math only, not medical advice. Verify every number yourself.