I travelled last year to Japan but didn't have any problems. I read the TSA web site regarding Diabetic medications for screening. When I approached the x-ray screener about my insulin and syringes he didn't care I had them and asked me if it didn't get affected by the x-ray machine then to just scan it through. I thought I was going to be interogated but I guess the TSA screeners were forewarned about diabetics travelling abroad.
http://www.diabetes.org/advocacy-and...ion/travel.jsp http://www.tsa.gov/public/interapp/e...orial_1059.xml http://securitymatters.about.com/od/...curitymeds.htm