The IDE-LBI application is intended primarily for liberal nurses. It ensures the traceability of samples at home, from the patient to the place where the tubes are deposited. Developed in close collaboration with the liberal nurses, IDE-LBI aims to optimize the sampling tour, while simplifying and securing the act itself. By scanning a patient barcode, the health professional no longer has to write on free paper. Orders are no longer to be photocopied since they are photographed.