Is third party information true? Should blood donors be excluded because of it?

Summary.  The Welsh Blood Service contacted and attempted to interview 40 donors about whom information from a third party had been received. This information would have excluded the donor from donation if it had been forthcoming from the donor. 57·5% of donors denied the information, but 25% of them accepted that the information was true and were removed from the register. 17·5% of donors did not respond and they were also removed from the register. Interviewing donors, about whom third party information has been received, enables those who have not divulged a risk factor or who do not wish to discuss a risk factor, to be removed from the donor panel. This increases the safety of the blood supply.