For checking the dataset from EDC(Electronic Data Capture) in clinical trials. 'dmtools' can check laboratory, dates, WBCs(White Blood Cells) count and rename the dataset. Laboratory - does the investigator correctly estimate the laboratory analyzes? Dates - do all dates correspond to the protocol's timeline? WBCs count - do absolute equal (all * relative) / 100? If the clinical trial has different lab reference ranges, 'dmtools' also can help.