3-Hydroxybutyric acid sodium (β-Hydroxybutyric acid sodium) is a metabolite that is elevated in type I diabetes. 3-Hydroxybutyric acid sodium can modulate the properties of membrane lipids.

2,3,5-Trimethylpyrazine is an endogenous metabolite.

2-Methylcyclohexanone is an endogenous metabolite.

Tetrahydrothiophen-3-one is an endogenous metabolite.

Monobenzyl phthalate (2-((Benzyloxy)carbonyl)benzoic acid) is the urinary metabolite exposuring to phthalates, such as, diethylhexyl phthalate (DEHP).

N-Acetyl-L-tryptophan is an endogenous metabolite.

DL-Tryptophan is an endogenous metabolite.

Benzylideneacetone is an endogenous metabolite.

4-Ethylbenzaldehyde is an endogenous metabolite.

2-Methylacetophenone is an endogenous metabolite.

p-Tolualdehyde is an endogenous metabolite.

D-Threonine (H-D-Thr-OH) is an enantiomer of L-threonine. D-Threonine is a metabolite of Saccharomyces cerevisiae.

2-Thiophenecarboxaldehyde is an endogenous metabolite.

3-Amino-2-oxazolidinone (AOZ) is the metabolite of Furazolidone. 3-Amino-2-oxazolidinone is always be detected as a indicator of furazolidone residues in vivo.

3-Methyl-2-cyclopenten-1-one is an endogenous metabolite.

3-Phenoxybenzoic acid is an endogenous metabolite.

2,4-Di-tert-butylphenol is an endogenous metabolite.

2-Naphthoxyacetic acid is an endogenous metabolite.

Acetylvaline is an endogenous metabolite.

2',4'-Dimethylacetophenone is an endogenous metabolite.

1,4-Dimethoxybenzene is an endogenous metabolite.

4-Ethoxyphenol is an endogenous metabolite.