For AlphaTrak users: I did some experimenting and learned my 26g ReliOn lancets work with my AlphaTrak lancet pen. I'm not sure if this is unique to my pen but for those using AlphaTrak, it might be worth looking into. A less expensive alternative.
I think most lancets and pens are interchangeable, it's not like strips. I always get the BD lancets, they seem to be sharper and hurt Tess's ear less.