Syringes explained
Syringes Explained: Gauge, Volume, and Units
5 min read
Insulin syringes are labeled in units, where 100 units equal 1 mL on a standard U-100 syringe.
Gauge refers to needle thickness — higher numbers mean thinner needles.
Choosing the correct syringe makes small-volume dosing much easier and reduces waste.
Common mistakes
Reading units as mL
On a U-100 syringe, 100 units = 1 mL, not 100 mL.
Wrong gauge for the dose
Small doses draw more accurately on a fine-gauge insulin syringe.
Frequently asked
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