The mark consists of a three dimensional configuration of a diagnostic device comprised of three adjacent units with an overall three dimensional trapezoidal-prism shape in which the housing for the device for the top and front panels is made of a unitary material comprising the full top and reaching to the bottom of the front side in a continuous curved transition from the horizontal top of the modules to the outwardly slanted vertical front of the modules. The modules include six recessed areas containing lighted test or specimen bays vertically arranged on two of the modules with a larger module bearing a screen in the center module. Each recessed area contains a light feature with an inverted U-shape, along with the specimen bay itself. There are operational buttons and instrument feet on the bottom edge. The specimen bays, the computer screen and the operational buttons and instrument feet are shown in dotted lines to indicate placement and do not form part of the mark.