In the international standard classification, Years involves: .
Canadian Standards Association (CSA), Years
CAN/CSA-Z900.2.5-2012 Lymphohematopoietic cells for transplantation (Second Edition; Update No 1: April 2013)
CAN/CSA-Z900.1-2012 Cells, tissues, and organs for transplantation: General requirements (Second Edition; Update 1: April 2013)
American Society for Testing and Materials (ASTM), Years
ASTM F2151-01 Standard Practice for Assessment of White Blood Cell Morphology After Contact with Materials (Withdrawn 2007)
ES-UNE, Years
UNE-EN ISO 19238:2023 Radiological protection - Performance criteria for service laboratories performing biological dosimetry by cytogenetics - Dicentric assay (ISO 19238:2023) (Endorsed by Asociación Española de Normalización in October of 2023.)