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This report summarizes malfunction events.A review of the events indicated that one (1) patient test produced an rh mistype with a false positive using manual tube weak-d testing and an anti-d monoclonal reagent on an automated blood bank system.Subsequent testing of reagent retention lots, reviews of design history records and reagent antigen validation testing of the initial bulk product used for commercial vialing showed acceptable results.Through post event tests and investigations, no specific causes were determined for the malfunctions.
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