Which needle gauge is thinner, a 30-gauge or a 27-gauge needle?

The 30-gauge needle is indeed thinner than the 27-gauge needle. The gauge number of a needle indicates its diameter, with higher numbers representing thinner needles. Therefore, a 30-gauge needle has a smaller internal diameter than a 27-gauge needle, making it ideal for certain applications where a less invasive entry is advantageous, such as pediatric or cosmetic procedures. A thinner needle can also result in less patient discomfort during injections.