Figure 2.
Evolution of the standard deviation (SD, expressed in logs) during the different EEQ campaigns from 2010 to 2019 (EEQ2010-01 to EEQ2019-17) for BCR-ABL1 by RT-qPCR (SD defined for BCR-ABL1/ABL1 log ratio between 0.01 and 1%) and the number of laboratories participating each year. EEQ = external evaluation of quality; n = number of laboratories.