Insulin Pens

Does anyone know how long refillable pens last? I’ve been using my Junior pen for 8 years and all the color has worn off, but I like that it does 1/2 units. I wonder though, if it has any loss in accuracy being that old?

I used mine for 15 years. If I ever go back to MDI, I plan to resurrect it and use it some more. I, too, liked the 1/2 units.

For NovoPen Junior there is a procedure described in the manual to check it for accuracy.

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