Ok, so this whole tslim, apidra occlusions thing has me researching. Turns out that apidra itself/sanofi recommends you change out insulin pump cartridge every 48 hours...didn't know that! Maybe it's just that these newer insulins are not meant to be out of vial, start breaking down and nothing to do with the tslim pump itself. Right now he never really goes more than 48 due to cartridge size, so it's never been tested. My question: if you use apidra, do you notice any issues/problems on day 3, if you pump and make it that long without a site/cartridge change? Thanks. The whole goal with considering tslim (who are super helpful on the phone) is to allow him longer time between site changes. If that's not happening, not sure it's worth it.