I was wondering if there is any common wisdom, or personal observations regarding insulin absorbtion rates and effectiveness using different length pen needles? I'm very thin, and have been using 5 or 6 mm needles-- anything longer than that would likely be into muscle on most sites. Even with the tiny difference between 4 and 5 mm I seem to notice some differences, but I can't pin down exactly what the different patterns are-- comments from other users would be welcome and might help me figure it out.
Thanks,
Sam