Blood discrimination reasoning

"Although some would prefer a system that assesses every individual's behaviour and level of risk rather than applying deferrals to groups, SaBTO's review concluded that there is insufficient evidence available to be able to determine the impact on blood safety of such a system. It is also not certain that all people could objectively assess their own level of risk. Based on published data, the review also concluded that the introduction of extensive donor questions regarding sexual behaviour could lead to a loss of existing donors who may find the process intrusive. The Blood Services are therefore required to follow deferral rules that estimate the statistical risk of certain groups based on behaviour. We are sorry for any inadvertent offence this may cause.