The Thermo Scientific MAS LabLink xL DAILY MODULE web-based application allows routine QC analysis to be carried out for day-to-day performance verification. Combined with the MAS LabLink xl WEB, internal QC analysis and external real-time peer comparisons can be conducted by laboratories using the module. Using defined laboratory criteria, the QC results can then be evaluated straight away. The data can then either be entered manually or electronically by uploading it to the MAS LabLink xL COMMUNICATOR. No software installation is necessary. A single screen is provided by the interactive Levey-Jennings plotting tool which enables primary review and approval of the data.