a clear trendp < 0.05
Among these metabolites there was a clear trend of increased urinary abundance with increasing sTYR concentration; a relationship confirmed by the significant (FDR-adjusted p < 0.05) positive correlations observed between sTYR and all urine metabolites derived from phenylalanine, tyrosine, HPPA and HPLA with the exception of phenylalanine and HPPA-sulfate.