Abstract: A method for coding and identification of biological samples for in vitro fertilisation comprises the steps of applying to receptacles intended for unfertilised eggs and sperm, respectively, an identification code characteristic of the patient; placing unfertilised eggs and sperm, respectively, in the receptacles; storing, transporting and admixing the respective samples in receptacles which each carry the same code; and implanting the resulting embryo in the patient. The identification code may based on RFID technology, in which sample vessels (12) are codified by the application of an RFID tag (13).