Abstract: An example medical diagnostic system includes one or more containers that are usable in a medical diagnostic test. Each container has an identification (ID) tag associated therewith. An ID tag of a container includes memory that is readable and writeable. The memory is for storing information relating to the container. Antennas are configured to communicate wirelessly with ID tags associated with the one or more containers. A control system is configured to store a location of the container based on an identify of the antenna, to select the antenna for communication with the ID tag, and to use the antenna to read at least some of the information from, or to write at least some of the information to, the memory on the ID tag.