Fig. 1

NPX values of 24 samples measured on two different plates. (A) The protein specific batch effects shown in four proteins (p1, p2, p3, p4). Colors highlight the different proteins, values below LOD in one of the two plates are indicated with an open symbol. (B) Example of the sample-specific batch effect for two samples (blue and orange). (C) Visualization of plate-wide effect as shown by a robust linear regression line (blue) fitted to the data.