What are the rules for those that may be colorblind and being able to document the visual inspection of a red cell prior to the unit being issued? Has anyone had this experience in their lab and how do you document their competency if allowed to perform this task? Are we allowed to exclude those people based on 21CFR part 606.2© "Persons whose presence can adversely affect the safety and purity of the products shall be excluded from areas where the collection, processing, compatibility testing, storage or distribution of blood or blood components is conducted."