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. Author manuscript; available in PMC: 2017 Oct 31.
Published in final edited form as: Anal Chem. 2017 May 2;89(10):5565–5577. doi: 10.1021/acs.analchem.7b00660

Table 2.

Quantification results in human serum, urine, feces and E. coli cell samples (Median ± SE).

Compounds Concentrations Compounds Concentrations


human serum
(µg/mL)
human urine
(µg/mL)
human feces
(µg/10 mg)
E. Coli cell
(µg/1×107 cells)
human serum
(µg/mL)
human urine
(µg/mL)
human feces
(µg/10 mg)
E. Coli cell
(µg/1×107 cells)
2-Hydroxybutyric acid 3.71 ± 0.22 0.19 ± 0.11 0.11 ± 0.01 L-2-Hydroxyglutaric acid 7.32 ± 0.43 0.83 ± 0.08
3-(3-Hydroxyphenyl)-3-hydroxypropanoic acid 0.32 ± 0.28 L-Alanine 23.15 ± 1.00 13.90 ± 1.41 1.59 ± 0.20 1.51 ± 0.27
3-Aminoisobutanoic acid 3.91 ± 2.20 L-Alpha-aminobutyric acid 1.25 ± 0.05 0.70 ± 0.04 0.10 ± 0.05
3-Hydroxyisovaleric acid 5.07 ± 0.53 0.20 ± 0.01 L-Asparagine 10.15 ± 0.36 13.11 ± 0.57 1.02 ± 0.1
3-Hydroxyphenylacetic acid 1.22 ± 0.35 0.26 ± 0.16 L-Aspartic acid 2.28 ± 0.03 3.13 ± 0.18 0.78 ± 0.11
3-Indolepropionic acid 3.17 ± 0.19 L-Cysteine 1.35 ± 0.05 4.55 ± 0.32 0.07 ± 0.20 0.04 ± 0.004
3-Methyl-2-oxovaleric acid 23.78 ± 0.93 10.90 ± 0.16 1.12 ± 0.02 1.07 ± 0.01 L-Glutamic acid 10.6 ± 0.76 6.85 ± 0.51 67.69 ± 4.38 6.21 ± 0.94
3-Methylpentanoic acid 0.04 ± 0.02 L-Histidine 63.24 ± 7.45 0.69 ± 0.14 0.78 ± 0.05
4-Hydroxybenzoic acid 0.60 ± 0.05 0.17 ± 0.03 Linoleic acid 810.87 ± 35.01 27.15 ± 4.35 0.11 ± 0.003
4-Hydroxycinnamic acid 3.40 ± 0.45 3.09 ± 0.76 L-Isoleucine 5.47 ± 0.28 0.90 ± 0.05 0.52 ± 0.11 5.98 ± 1.06
Adipic acid 4.99 ± 0.68 0.40 ± 0.16 L-Leucine 11.64 ± 0.64 1.65 ± 0.12 0.82 ± 0.21 4.91 ± 0.87
Alpha-Hydroxyisobutyric acid 3.84 ± 0.24 L-Lysine 17.79 ± 0.75 13.48 ± 1.89 7.56 ± 0.64 5.59 ± 1.08
Alpha-Linolenic acid 133.05 ± 5.73 5.27 ± 1.31 L-Methionine 2.03 ± 0.08 0.68 ± 0.02 0.37 ± 0.05 0.53 ± 0.08
Aminoadipic acid 9.83 ± 1.12 0.57 ± 0.13 L-Norleucine 3.46 ± 0.57
Arachidic acid 0.21 ± 0.02 1.56 ± 0.56 L-Phenylalanine 7.32 ± 0.26 5.21 ± 0.50 0.68 ± 0.22 2.86 ± 0.61
Arachidonic acid 78.26 ± 3.79 5.60 ± 2.45 L-Proline 16.6 ± 0.75 0.62 ± 0.03 0.63 ± 0.05 0.40 ± 0.06
Behenic acid 0.66 ± 0.17 L-Tryptophan 17.01 ± 0.37 15.33 ± 0.39 1.42 ± 0.05 1.56 ± 0.08
Beta-Alanine 5.32 ± 0.32 0.85 ± 0.05 L-Tyrosine 20.57 ± 0.94 12.39 ± 1.76 2.17 ± 0.35 1.09 ± 0.16
Butyric acid 0.35 ± 0.03 122.52 ± 18.54 0.03 ± 0.003 L-Valine 17.89 ± 0.71 2.16 ± 0.14 0.62 ± 0.16 1.55 ± 0.26
Capric acid 0.25 ± 0.02 0.07 ± 0.15 Malic acid 0.18 ± 0.05 1.36 ± 0.09 0.05 ± 0.01
Caproic acid 0.34 ± 0.31 Malonic acid 0.87 ± 0.04 0.24 ± 0.03
Caprylic acid 0.28 ± 0.02 0.07 ± 0.02 m-Cresol 2.10 ± 0.18
cis-Aconitic acid 1.98 ± 0.08 65.85 ± 5.63 0.17 ± 0.01 Methylsuccinic acid 0.95 ± 0.05 0.32 ± 0.06
Citraconic acid 1.66 ± 0.02 0.17 ± 0.004 Myristic acid 1.04 ± 0.51
Citramalic acid 13.62 ± 0.76 0.72 ± 0.02 Nervonic acid 0.35 ± 0.04
Citric acid 39.14 ± 2.19 915.84 ± 76.1 2.41 ± 0.16 0.45 ± 0.01 Nicotinic acid 2.61 ± 0.01 0.67 ± 0.16
Docosapentaenoic acid 3.22 ± 2.44 0.68 ± 0.33 Nonadecanoic acid 0.10 ± 0.01
Docosatrienoic acid 14.32 ± 0.68 0.27 ± 0.07 Norvaline 0.33 ± 0.04 4.02 ± 0.65
Dodecanoic acid 0.28 ± 0.02 0.25 ± 0.02 0.22 ± 0.13 0.02 ± 0 Oleic acid 400.44 ± 13.75 38.04 ± 4.54 0.23 ± 0.01
Dopamine 13.17 ± 0.33 15.81 ± 1.66 6.27 ± 0.16 0.97 ± 0.04 Ornithine 5.72 ± 0.16 1.28 ± 0.17
Eicosapentaenoic acid 393.26 ± 17.83 6.81 ± 2.29 Ortho-Hydroxyphenylacetic acid 0.89 ± 0.04
Eicosatrienoic acid 40.9 ± 3.25 3.08 ± 1.32 Oxoglutaric acid 2.76 ± 3.17 6.46 ± 0.50 0.19 ± 0.06 1.43 ± 0.74
Eicosenoic acid 5.35 ± 2.00 1.06 ± 0.30 Palmitic acid 167.74 ± 4.88 19.91 ± 1.53 0.24 ± 0.02
Erucic acid 0.57 ± 0.29 Palmitoleic acid 12.23 ± 1.04 2.05 ± 0.15
Ethylmethylacetic acid 0.26 ± 0.01 1.75 ± 0.10 0.02 ± 0 p-Cresol 1.32 ± 0.11
Fumaric acid 1.57 ± 0.03 Pelargonic acid 0.39 ± 0.01 0.044 ± 0.002
Gamma-Aminobutyric acid 6.01 ± 0.05 1.22 ± 0.08 3.88 ± 0.48 Pentadecanoic acid 0.76 ± 0.02 1.12 ± 0.14 0.03 ± 0
Glutaric acid 2.51 ± 0.20 1.70 ± 0.24 Phenol 0.28 ± 0.001 0.07 ± 0.03
Glyceric acid 37.68 ± 14.81 4.32 ± 0.34 Phenylacetic acid 1.58 ± 0.16 2.06 ± 0.16
Glycine 11.54 ± 0.93 51.66 ± 3.94 1.16 ± 0.18 p-Hydroxyphenylacetic acid or 3-Indoleacetonitrile 4.33 ± 0.72 0.10 ± 0.06
Glycolic acid 21.27 ± 2.64 2.03 ± 0.81 Pimelic acid 2.88 ± 0.12 0.31 ± 0.01
Heptadecanoic acid 1.72 ± 0.06 0.62 ± 0.07 Propionic acid 10.98 ± 1.08 0.002 ± 0.001
Heptanoic acid 0.05 ± 0.08 Putrescine 0.74 ± 0.27
Hippuric acid 218.77 ± 35.78 Pyroglutamic acid 33.68 ± 0.65
Hydrocinnamic acid 0.71 ± 0.19 Salicyluric acid 2.67 ± 0.35
Indole 0.67 ± 0.03 Stearic acid 125.55 ± 4.12 24.24 ± 1.87
Indoleacetic acid 25.72 ± 1.65 1.56 ± 0.08 Suberic acid 12.39 ± 0.33 1.25 ± 0.08
Isobutyric acid 0.002 ± 0.001 0.20 ± 0.03 1.87 ± 0.13 0.02 ± 0.002 Succinic acid 12.42 ± 1.83 3.80 ± 1.86 0.14 ± 0.07
Isocaproic acid 0.08 ± 0.04 Tartaric acid 10.71 ± 17.06
Isocitric acid 160.52 ± 15.64 0.64 ± 0.04 Tetracosanoic acid 0.37 ± 0.04
Isovaleric acid 0.21 ± 0.01 2.26 ± 0.14 0.02 ± 0.001 Valeric acid 3.90 ± 0.30
Itaconic acid 6.11 ± 0.27 0.31 ± 0.01 Vanillic acid 1.73 ± 0.26 0.18 ± 0.07
HHS Vulnerability Disclosure