How many units is 300 mcg on an insulin syringe?
It depends on your concentration (vial mg ÷ water mL). On a U-100 syringe: 5 mg + 1 mL → 6 units; 5 mg + 2 mL → 12 units; 5 mg + 3 mL → 18 units; 10 mg + 1 mL → 3 units; 10 mg + 2 mL → 6 units; 10 mg + 3 mL → 9 units. Formula: units = (300 × water mL) ÷ (vial mg × 10).
The math
units (U-100) = (mcg × water mL) ÷ (vial mg × 10) 5 mg + 1 mL → 6 units 5 mg + 2 mL → 12 units 5 mg + 3 mL → 18 units 10 mg + 1 mL → 3 units 10 mg + 2 mL → 6 units 10 mg + 3 mL → 9 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.