Below are the segments and its functions: <B>CODE</B>: appears with the code number of the test strips currently in use. <B>CTL</B>: indicates a control solution test result. <B>KETONES?: </B>appears when a blood glucose test result is above 240. <B>MEM</B>: indicates a test result stored in memory. <B>BLOOD DROP SYMBOL</B>: this symbol tells you when to apply the sample. <B>TEST RESULT</B>: this is the area where the test results appear. <B>BATTERY SYMBOL: </B>this symbol appears when the battery is low or must be replaced. <B>MG/DL: </B>this is a preset unit of measure. It must appear with <U>▲ </U>symbol before applying the blood sample to the test strip. <B>DATE AND TIME: </B>this area shows the month, day, hour, and minutes.