2.2. Primary Outcome
From an analytical point of view, targeted LC-MRM analysis allowed the quantification of 62 proteins in two types of samples: plasma and DBS (The inter-assay variation median was 4.2% (1.3–22.4) and was determined on 8 different QC samples (The comparison between plasma microsampling and DBS was possible by calculating the correlation coefficient between the values of the 62 proteins obtained in the two situations (