The majority of test ordering now occurs directly by providers entering orders on computer screen, from simple labs up to MRI and Nuclear Medicine imaging. I believe that simply having the cost of that test on the screen might have a profound impact on ordering of unnecessary or reflexive testing. A prime example would be of coagulation studies that residents still routinely order on moderately ill admissions and on pre-op patients without bleeding histories. Where educational awareness has failed a simple remdinder of the cost may well succeed without inappropriately limiting use where indicated. This is appropriate for all clinical environments from clinic to ICU.