In addition to the here presented ALL (IG/TR) RQ-PCR-based MRD QA program, programs for ALL (KMT2A), NHL (IGH::BCL2; IGH::CCND1; IGH; IGK) and Ph+ALL (BCR::ABL1) are offered and will contribute to standardized and reproducible MRD data. The gene discussed is BCR; the disease is acute lymphoblastic leukemia.