Thanks, prefilled. I’ve checked online in last hour and it actually says after first use the pen should be kept at room temp but below 30C. I presume by keeping on fridge door or in cool container with 3 cold pouch things that for this insulin, once opened under room temp leads to crystalisation.
Hi started insulin using a pen 2 weeks ago. Already 3 pens have had insulin crystalise. Is it because they are being kept too cold? Latest was kept in insulated container with cool pads but not frozen pads.