Processed serum and BALF metabolomics data for ARDS

During data processing, missing values were imputed using half of the minimum non-zero value for each metabolite across the dataset, resulting in complete data matrices for downstream statistical analyses. As untargeted metabolomics data, the measurements may be influenced by sample preparation, instrumental drift, and signal noise; however, analytical stability was monitored using quality control samples, and normalization procedures were applied to reduce systematic variability.This dataset does not include raw LC–MS files and is intended to support transparency, data reuse, and reproducibility of downstream statistical, differential metabolite, and pathway analyses.

The data files are stored in a standard Excel format and can be accessed and analyzed using commonly available software such as Microsoft Excel, R, or Python.