A 27-gauge needle, a 30- gauge needle, and a 31-gauge needle have diameters of 0.41 mm, 0.31 mm, and 0.26 mm, respectively ().The 31-gauge needles have become standard practice for patients with ...

A 2020 study found that most users prefer shorter needles ranging from 4 to 9 mm in ... A comparison study of patient ratings and safety of 32- and 34-gauge insulin pen needles. https://pmc.ncbi ...