Yes, the larger the gauge the smaller the needle size.
Diameter
Which of the following needles has the widest lumen?
The size of a needle is typically expressed by its gauge, which is a numerical scale where a higher number indicates a thinner needle. For example, a 30-gauge needle is finer than an 18-gauge needle. Additionally, needle sizes may also be described by their length and type (e.g., hollow bore, straight, or curved) depending on their intended use in medical procedures or sewing.
25 gauge is the size of the needle not the syringe. they are measured in cc's
No - the two have no relationship to each other at all.
21 gauge
Butterfly needles
Gauge is a measure of how large the opening of the needle is. The larger the number the smaller the hole. Most venipuncture is done with a 16-24 gauge needle, depending on the size of the patient and the location of the vein. A 10 gauge needle would be huge.
It is determined by the size of the veins
Guage 18 in medicine is the size of a needle either for injections or for IV insertion.
Size and condition of the vein