A U.S. Patent for “Cell-Sorting Method and Associated Device” was awarded to Commissariat a L’Energie Atomique on September 3rd, 2019. The present invention is a method of discriminating a living cell from a dead cell, and a device for implementing the method, the method including: using a lens-free imaging device to acquire a diffraction figure corresponding to a cell; and determining a light intensity on a central area of an elementary diffraction figure associated with the cell. It can thus be determined if the studied cell is a living cell or a dead cell. Learn More