Choosing the Right Insulin Syringe When selecting an insulin syringe for use with your prescription medication, consider factors such as needle length, gauge size, and volume capacity. It's also ...

The size of the barrel determines how much insulin a syringe holds, and the needle gauge determines the needle thickness. Thinner needles may be more comfortable to inject for some people.

For a single type of insulin:a. Draw air into the syringe equal to your dose.b. Insert the needle into the bottle and push in the air.c. Invert the bottle, ensuring the needle is submerged, then ...