I am new to this site, but thought I would pick some BB brains. 63 y/o female GI bleed presented to OPD for 2 units rbcs on 8/17/03, MTS screen neg. Shen then returned 9/12/03, and an anti-E was identified (1+), pt typed as E neg. She recieved 1 unit E neg xmatch comp rbcs without incident. She returned 12/5/03 with a micro DAT(PS and IgG), and a 3+ anti-E in the eluate, 4+ anti-E in her serum. She had not been transfused since the 1 E neg rbc on 9/12. At this time, we retyped her for E, and she now is m+ for E Ag. The transfused unit had been retyped for E, and the DAT on the donor unit was neg. Specimen was sent to reference lab for sub-group testing, but they were unable to perform molecular testing. The patient has since been transfused with 4 units E neg rbcs without incident. Any ideas?
