In 1915, forensic serologist Leone Lattes devised a method for recovering dried blood samples so that blood type could be determined. Lattes invented a method to determine blood type from a dry sample in 1932.
Leone Lattes was an early twentieth-century Italian forensic scientist who worked as a researcher at the Institute of Forensic Medicine in Turin, Italy. He published a study in 1901 that described the contemporary way of classifying blood types. He had established a method for assigning samples to each of the major blood types, the antibody test, by 1915.