The genomic dna sample was sent to grifols ih center for bi-directional sequencing.Sequencing interrogated jk gene exons 3 to 10 and the genotype jk*b(588g,956t) homozygous was identified.The allele jk*b(956t) is a null allele reported by isbt, jk*02n.08.Hence, the genotype result jk*b(588g,956t) homozygous with a predicted jkb- phenotype is in concordance with the serology result, jkb-.Id core xt reported a predicted jkb+ phenotype, but jk*b(956t) null allele, not interrogated by id core xt, is found associated with a jkb- phenotype.This false positive result obtained by id core xt is considered a discrepant result and then a malfunction.This limitation is covered by the general assay limitations described in the id core xt package insert (limitations 1 and 10).
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