When you travel, keep all your meds and syringes in your carry on in a sealed ziplock bag. Do not preload the syringes but have the bottle of testosterone with your name and doctors name in the bag. Often security prefers you to take out the ziplock bag and place it in the tray along with other lose items but that can also depend on the airport and personal. I've left mine in my bag and I've also placed the ziplock bag with my meds in it in the tray.