Daudi cell stroma: An alternative to dithiothreitol to resolve daratumumab interference in pretransfusion testing.

Daudi cell stroma is inexpensive, easy to prepare in large batches, and can be used as an off-the-shelf reagent. Incubation of plasma from DARA-treated patients with Daudi cell stroma can efficiently overcome DARA interference in serologic testing without affecting DTT- or trypsin-sensitive antigens.