I have a small wallet sized case I carry with me that will hold several syringes, an ice pack and the bottle of Trimix. You can also preload the syringes and take just them but I suggest you keep a copy of your prescript
ion just in case TSA asks about
them. I took 3 preloaded syringes on a cruise last year and TSA didn't say a word about
them in my carry on luggage.
Terry