Yes, the larger the gauge the smaller the needle size.
Which of the following needles has the widest lumen?
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.
Butterfly needles
21 gauge
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
Size and condition of the vein
Guage 18 in medicine is the size of a needle either for injections or for IV insertion.
A needle with a size of 0000 (4 zeros), also known as a 0000 gauge needle, has the largest diameter. These needles are typically used for thick materials like leather or heavy-duty fabrics.
The 21 gauge is a smaller needle.