We received a sample from a 13 year old girl who presented at her GP with lethargy and dizziness. Her Hb was found to be 7.5 with a slightly raised bilirubin. She has no history of previous transfusion or medical condition. The results of the testing were as follows.Group B CcDee, DAT negative. Positive 2+/3+ with all panel cells by Ortho/Diamed IAT. Positive 4+ with all enzyme treated red cells using Ortho CAT. 2+ positive using LISS tube IAT. 4°C and RT screen negative. Extended typing K- k+ ,Fya-b+, Jka+b+,Lea-b-, S-s+, M+N+, P1+ Lua-. Does anyone have any explanation for these results in view of the fact that they are fairly certain she has never been transfused?