Lack of agreement exists between UK centres in regard to HLA antibody specificity analysis. The fact that the required analysis was limited to interrogation of supplied data files makes the observation more concerning. The root cause of this variation is differences in data handling practice between the participating centres.

Laboratory screening of IVIg preparations provides a rational basis for the selection of product for administration to patients in whom the aim is to produce a PRA reduction. Experiments involving protein-A treatment of IVIg preparations indicate that immunoglobulin G is the principal factor involved in the abrogation of serum reactivity.

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