Diabetic Pen needles length

5mm seems awfully short. Does it work as well as the 8mm or a short insulin syringe which is about 12mm? What is too short?


There are 4mm pen needles out there too. They work, and seem to be what are recommended now, but I like them a bit longer, because it seems to be easier to find the thicker needles in longer lengths. Really fine needles (31 and 32 gauge) are a bother if you need large injections, and they bend too easily.

Try them and see what you think is probably the best advice.