The first study, MTBLS265 , compared metabolic profiles with liquid chromatography-mass spectrometry (LC-MS) in blood samples of 15 young (29 ± 4 years of age, 10 male and 5 female) and 15 elderly (81 ± 7 years of age, 4 male and 11 female) healthy individuals (BMI not provided). No information was provided on the ethnicity of the participants. In total, 126 metabolites were identified out of which 14 were found to be age-related, which were determined by comparing the Coefficient of Variation-results between the two groups. For the data visualization through the DSMN, CV30 and p-values from supplementary Dataset S1 as provided in the original paper were used.