Quick story-I travelled from Vanuatu to LA a few years ago after having blood clots in my lungs on a long flight (DVT's) the year before and was given Coumiden (sp?) in pre-filled syringes from the hospital I was medical evacuated to in New Zealand. I was told to keep them in case I got them again-especially since I traveled frequently on these long 11-13 hour flights. I packed a box of 8 syringes (with needles) in my carry-on from Vanuatu to LA, and back thru LA to Fiji and Vanuatu-and NEVER ONCE did anyone even open my bag to look at them when they went thru the X-ray!!