Notification of blood donors who test positive for transfusion-transmissible infections

Background and objectives: Despite screening procedures, a few blood donors confirm positive for transfusion-transmissible infections and are deferred. Effective notification of laboratory results is essential to ensure that donors are advised of confirmed results and to seek medical care. Here we report results from post-notification interviews of Canadian Blood Services donors.

Materials and methods: Over 17 years, 2006-2022, all donors with confirmed positive results for hepatitis B virus (HBV), hepatitis C virus (HCV), human T-cell lymphotropic virus (HTLV) and syphilis were notified by registered mail of their result and advised to see a physician. In a separate communication, all donors were later invited to participate in a scripted interview asking whether they tested positive for an infection; if yes, which one, what their reaction was, whether they consulted a physician and whether public health contacted them. Frequencies of responses were calculated.

Results: Of 2654 donors with confirmed positive test results, 876 (33%) participated; 90% said they were informed of a positive test result. Of these, about a quarter did not know for which infection they were positive. Most were surprised, and some were sad or disappointed. Most saw a physician after notification (77%). About two-thirds with HBV or HCV said they were contacted by public health, slightly fewer (58%) with syphilis, 27% of those with HTLV.

Conclusion: Most donors recalled being notified and were aware of their positive test, but details of the infection were sometimes not understood or recalled, and not all donors consulted a physician about the infection.