I could probably write a book on this subject, and perhaps some day I will. Over the course of my career I have become familiar with four different blood bank information systems, some to my great regret. One of the big problems with choosing and installing a blood bank IS is knowing to ask the right questions. Unfortunately, the representatives of many vendors who demo their company's software don't often know the answers, and considerable research is required to ferret out the responses. For example, a common mistake is to concentrate on the ease of use from the bench standpoint, certainly an iimportant consideration. But an equally important consideration is just how well these systems talk to the existing HIS, that is, how well do they communicate critical information. I think it essential to communicate the current status of a unit across the LIS-HIS interface, so that physicians can see that units are crossmatched, or issued, or transfused. Some systems can do this, others cannot--even much touted recently revamped systems. I would be happy to discuss the topic further--I would like to create a checklist for "Choosing the right BBIS".--CC