Urinary metabolite panel dataset for Bulgarian children with ASD (N=73; ages 3–13), v1

This record provides curated urinary metabolite panel results for a Bulgarian pediatric cohort with autism spectrum disorder (ASD), aged 3–13 years (N=73). The dataset contains quantitative urinary analytes and accompanying metadata (units and laboratory reference limits) to support reproducible reuse. Scope of this v1 release. This release contains quantitative results for 24 urinary metabolites, representing a curated subset of a broader diagnostic panel. Included metabolites (24):Dopamine; Noradrenaline; Adrenaline; Serotonin; GABA; Glutamate; Phenylalanine; Tyrosine; Cystathionine; Methylmalonic acid; Nicotinic acid; Nicotinamide; S-Adenosyl Methionine; Betaine; Choline; SAM/SAH; Citrulline; Citrate; Lactate; Pyruvate; Suberic acid; Carnitine; Trimethylamine N-Oxide; Trimethylamine. For machine-readable definitions, units, and reference limits see ASD_v1_data_dictionary.csv and ASD_v1_reference_ranges_units.csv. Excluded analytes: tryptophan-pathway metabolites, neopterin, and urinary creatinine (as a standalone analyte). All analytes from the broader diagnostic panel that are not included in this v1 release are reported in the associated preprint (DOI: 10.20944/preprints202602.0882.v1) and are not duplicated here. Qualified result handling. Qualified results occur only for Trimethylamine. Laboratory-reported values below the limit of quantification (e.g., “