Customer reported a single patient produced a false blood group of o pos when tested in the abd/rev card on vision analyzer on (b)(6) 2022.Patient had a history of blood type ab positive.Customer tested another sample from the same patient for an abo confirmation which resulted in the expected ab pos.This prompted customer to repeat testing on initial patient sample and ab pos results attained.Customer reports alba q qc lot# v242465; (b)(6) 2022 not affected.Sw: 5.12.4 sample id: (b)(6).Econn encryption id # (b)(6).Repeat testing on vision gave ab pos results using the same listed reagents.Customer tested with mts abd/rev gel card lot# 080421037-06 exp: 5.19.22,.Customer tested with 0.8% affirmagen lot# affirmagen 8a374 exp: 1.25.22.
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