Fig. 2
From: Urine metabolite profiling in Indian males exposed to high-altitude: a longitudinal pilot study

Metabolomic analysis of HA and BL urine samples was conducted, comprising (a) PCA score plot based on the LC–MS Spectra of urine samples from BL and HA, (b) An OPLS-DA model with logarithmic transformation and Pareto scaling for the metabolomics profiling of urine samples, and (c) OPLS-DA Model validation via a permutation test employing n = 20 permutations. (d) Goodness-of-fit parameters generated from the OPLS-DA model, with one predictive (p1) and two orthogonal (o1, and o2) components.