Does the type/brand of the pen needle matter?

Type 1 and LADA
1

I recently got a Novopen 5 since my Tresiba prefilled pens are running out. The Novopen 5 instructions repeatedly emphasize that the pen was designed for use with 3ml Novo Nordisk Penfill cartridges … and with NovoFine or NovoTwist needles.

I don’t have such needles. Instead, I have mylife Penfine Classic 6mm ones. I now wonder if the type/brand of needle affect anything. I know that the length can influence things, as can the thickness/gauge, but other than that, does it matter? Or is this simply a legal matter, because Novo Nordisk tested the pen with their needles only and thus cannot legally guarantee function with others?

2

nope doesn’t matter

3

Ditto

4

No it doesn’t matter. However, you may have a personal preference. My preferred pen needle is the NovoFine Plus 32g x 4mm. The pharmacy was out of these the other day so I took a box of BD Ultra-Fine 31g x 5mm needles and I prefer them for my daily 75u Toujeo dose so I might keep using them. I absolutely hated the BD Ultra-Fine 32G x 4mm needles, for some reason the way the point is angled on them they wouldn’t easily pierce my skin.