Table S2 Polar analyte test mixtures for chromatographic method development Mixture Components* Concentration (mM) 1 2-amino butyric acid 1 Hippuric acid 1 Maltose 5 Xylitol 5 2 Adenosine 2.5 Cytidine 2.5 Cytosine 0.5 Uracil 1 3 Choline 2.5 Creatinine 2.5 Proline 0.5 Taurine 5 Trigonelline 5 4 Creatinine 1 Cytidine 1 Glutamine 1 Hippuric acid 1 Leucine 1 Phenylalanine 1 Tryptophan 1 5 Adenine 1 Adenosine 1 Arginine 1 Hippuric acid 1 Phenylalanine 1 Taurine 1 Tryptophan 1 Uracil 1 * All mixtures contained caffeine at 0.025 mM as an internal standard
Table S2 Polar analyte test mixtures for chromatographic method development Mixture Components* Concentration (mM) 1 2-amino butyric acid Hippuric acid Maltose Xylitol 1 1 5 5 2 Adenosine Cytidine Cytosine Uracil 2.5 2.5 0.5 1 3 Choline Creatinine Proline Taurine Trigonelline 2.5 2.5 0.5 5 5 4 Creatinine Cytidine Glutamine Hippuric acid Leucine Phenylalanine Tryptophan 1 1 1 1 1 1 1 5 Adenine Adenosine Arginine Hippuric acid Phenylalanine Taurine Tryptophan Uracil 1 1 1 1 1 1 1 1 * All mixtures contained caffeine at 0.025 mM as an internal standard
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