“…These medical disorders are Parkinson’s disease (PD), diabetic retinopathy, Alzheimer’s disease (AD)/dementia, cardiovascular disease, and inborn error or metabolism (IEM). Out of the 26 publications that were included in this review, 3 were adjudged to be relevant to our research interest with respect to PD [ 41 , 42 , 43 ], 5 with respect to diabetic retinopathy [ 30 , 44 , 45 , 46 , 47 ], 2 for AD [ 16 , 46 ], 14 for cardiovascular disease [ 18 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 ], and 2 for IEM [ 59 , 60 ]. Of the 3 most often utilised platforms for metabolic profiling, MS spectroscopy (coupled with other separation techniques) ranks first, being employed for biomarker discovery in 17 out of the 26 studies identified, and accounting for 65.4% of all studies.…”