Use a phlebotomy tray? Choose the TransCart if you need a mobile cart ’hub’ that fits perfectly for your tray. Find the right tray to start from scratch. The TransCart base model comes in a variety of designs, all built to accommodate the tray of your choosing. Once you have the right cart, accessories are easy to choose and mount. Only TransCart offers a wide range of accessory options that also includes a pediatric-friendly selection so you can roll in a little fun to your little ones.