Fig. 3
From: Post-acquisition filtering of salt cluster artefacts for LC-MS based human metabolomic studies
Significant metabolites (Wilcoxon test, FDR corrected P < 0.1, >2 fold change) remaining in the malnutrition dataset after a no filter, b mass defect filter only, c mass defect filter with retention time. Each point represents a single metabolite, colored according to their charge states, with salt clusters shown in red. Data was acquired by positive ESI. Singly-charged features encompass a variety of adducts including but not limited to [M + H], [M + Na], [M + K] and [M + NH4]