It is a metabolite of phenylalanine and is excreted in the urine of patients suffering from diseases like phenylketonuria.
2-Hydroxyphenylacetic acid may be an indication of SIBO. It also becomes elevated with Giardia.
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Elevated 2-hydroxyphenylacetic acid is associated with intestinal bacteria overgrowth.
Possible causes:
- Excessive phenylaline (dietary or PKU) or tyrosine
- Reduced oxygenation (Fe deficiency, anemia, pulmonary disorder)
- Low tetrahydrobiopterin (BH4) - an essential cofactor for phenylaline, tyrosine, tryptophan & nitric oxide
Additional investigations:
- Urinary Amino Acids
- Iron Studies
Treatment considerations:
- Rule out excessive phenylaline & or tyrosine
- Address oxygenation (correct anemia, pulmonary problems, cardiac insufficiency)
- Supplement vitamin C (increases BH4 levels in the body)
- 5-MTHF (from folic acid) may help nitric oxide production when BH4 is low
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2-Hydroxybutyric, 2-Hydroxybutyric (Males Age 13 and Over), 2-Hydroxyhippuric, 2-Hydroxyhippuric (Females Under Age 13), 2-Hydroxyhippuric (Males Age 13 and Over), 2-Hydroxyisocaproic, 2-Hydroxyisocaproic (Males Age 13 and Over), 2-Hydroxyisovaleric, 2-Hydroxyisovaleric (Males Age 13 and Over), 2-Hydroxyphenylacetic, 2-Hydroxyphenylacetic (Males Age 13 and Over), 2-Oxo-4-methiolbutyric, 2-Oxo-4-methiolbutyric (Males Age 13 and Over), 2-Oxoglutaric, 2-Oxoglutaric (Males Age 13 and Over), 2-Oxoisocaproic, 2-Oxoisocaproic (Males Age 13 and Over), 2-Oxoisovaleric, 2-Oxoisovaleric (Males Age 13 and Over), 3-Hydroxy-3-methylglutaric (HMG), 3-Hydroxy-3-methylglutaric (Males Age 13 and Over), 3-Hydroxybutyric, 3-Hydroxybutyric (Males Age 13 and Over), 3-Hydroxyglutaric, 3-Hydroxyglutaric (Males Age 13 and Over), 3-Indoleacetic, 3-Indoleacetic (Males Age 13 and Over), 3-Methyl-2-oxovaleric, 3-Methyl-2-oxovaleric (Males Age 13 and Over), 3-Methylglutaconic, 3-Methylglutaconic (Males Age 13 and Over), 3-Methylglutaric, 3-Methylglutaric (Females Under Age 13), 3-Methylglutaric (Males Age 13 and Over), 3-Oxoglutaric, 3-Oxoglutaric (Males Age 13 and Over), 3-Oxoglutaric (Males Under Age 13), 4-Cresol, 4-Cresol (Males Age 13 and Over), 4-Hydroxybenzoic, 4-Hydroxybenzoic (Males Age 13 and Over), 4-Hydroxybutyric, 4-Hydroxybutyric (Females Under Age 13), 4-Hydroxybutyric (Males Age 13 and Over), 4-Hydroxyhippuric, 4-Hydroxyhippuric (Males Age 13 and Over), 4-Hydroxyphenylacetic, 4-Hydroxyphenylacetic (Females Under Age 13), 4-Hydroxyphenylacetic (Males Age 13 and Over), 4-Hydroxyphenyllactic, 4-Hydroxyphenyllactic (Males Age 13 and Over), 5-Hydroxyindoleacetic (5-HIAA), 5-Hydroxyindoleacetic (5-HIAA) (Males Age 13 and Over), 5-Hydroxymethyl-2-furoic, 5-Hydroxymethyl-2-furoic (Males Age 13 and Over), 5-Hydroxymethyl-2-furoic (Males Under Age 13), Acetoacetic, Acetoacetic (Males Age 13 and Over), Aconitic, Aconitic (Males Age 13 and Over), Adipic, Adipic (Males Age 13 and Over), Arabinose, Arabinose (Females Under Age 13), Arabinose (Males Age 13 and Over), Arabinose (Males Under Age 13), Ascorbic, Ascorbic (Males Age 13 and Over), Ascorbic (Males Under Age 13), Carboxycitric, Carboxycitric (Males Age 13 and Over), Citramalic, Citramalic (Males Age 13 and Over), Citric, Citric (Males Age 13 and Over), DHPPA (Beneficial Bacteria), DHPPA (Beneficial Bacteria) (Males Age 13 and Over), Dihydroxyphenylacetic (DOPAC), Dihydroxyphenylacetic (DOPAC) (Females Under Age 13), Dihydroxyphenylacetic (DOPAC) (Males Age 13 and Over), Dihydroxyphenylacetic (DOPAC) (Males Under Age 13), Ethylmalonic, Ethylmalonic (Males Age 13 and Over), Fumaric, Fumaric (Males Age 13 and Over), Furan-2,5-dicarboxylic, Furan-2,5-dicarboxylic (Males Age 13 and Over), Furancarbonylglycine, Furancarbonylglycine (Females Under Age 13), Furancarbonylglycine (Males Age 13 and Over), Furancarbonylglycine (Males Under Age 13), Glutaric, Glutaric (Females Under Age 13), Glutaric (Males Age 13 and Over), Glyceric, Glyceric (Males Age 13 and Over), Glycolic, Glycolic (Males Age 13 and Over), Hippuric, Hippuric (Females Under Age 13), Hippuric (Males Age 13 and Over), Homogentisic, Homogentisic (Males Age 13 and Over), Homovanillic (HVA), Homovanillic (HVA) (Males Age 13 and Over), HPHPA, HPHPA (Males Age 13 and Over), HVA / VMA Ratio, HVA / VMA Ratio (Males Age 13 and Over), HVA/ DOPAC Ratio, HVA/ DOPAC Ratio (Males Age 13 and Over), Kynurenic, Kynurenic (Males Age 13 and Over), Lactic, Lactic (Males Age 13 and Over), Lactic (Males Under Age 13), Malic, Malic (Males Age 13 and Over), Malic (Males Under Age 13), Malonic, Malonic (Males Age 13 and Over), Mandelic, Mandelic (Males Age 13 and Over), Methylcitric, Methylcitric (Males Age 13 and Over), Methylmalonic, Methylmalonic (Males Age 13 and Over), Methylsuccinic, Methylsuccinic (Males Age 13 and Over), N-Acetylaspartic, N-Acetylaspartic (Males Age 13 and Over), N-Acetylcysteine (NAC), N-Acetylcysteine (NAC) (Males Age 13 and Over), Orotic, Orotic (Females Under Age 13), Orotic (Males Age 13 and Over), Oxalic, Oxalic (Females Under Age 13), Oxalic (Males Age 13 and Over), Pantothenic (B5), Pantothenic (B5) (Males Age 13 and Over), Phenyllactic, Phenyllactic (Males Age 13 and Over), Phenylpyruvic, Phenylpyruvic (Males Age 13 and Over), Phosphoric, Phosphoric (Males Age 13 and Over), Pyridoxic (B6), Pyridoxic (B6) (Males Age 13 and Over), Pyroglutamic, Pyroglutamic (Males Age 13 and Over), Pyruvic, Pyruvic (Females Under Age 13), Pyruvic (Males Age 13 and Over), Quinolinic, Quinolinic (Males Age 13 and Over), Quinolinic / 5-HIAA Ratio, Sebacic, Sebacic (Males Age 13 and Over), Suberic, Suberic (Males Age 13 and Over), Succinic, Succinic (Females Under Age 13), Succinic (Males Age 13 and Over), Tartaric, Tartaric (Males Age 13 and Over), Thymine, Thymine (Males Age 13 and Over), Tricarballylic, Tricarballylic (Females Under Age 13), Tricarballylic (Males Age 13 and Over), Tricarballylic (Males Under Age 13), Uracil, Uracil (Males Age 13 and Over), Vanillylmandelic (VMA), Vanillylmandelic (VMA) (Males Age 13 and Over)
