A healthy result should fall into the range 0.16 - 1.8 Ratio.
The Organic Acids Test measures levels of HVA (homovanillic acid) and VMA (vanillylmandelic acid), the metabolites of the neurotransmitters, dopamine and epinephrine/norepinephrine. It also measures the ratio of the two metabolites.
Elevated HVA and decreased VMA may be caused by Clostridia infection or lead toxicity.
An elevated ratio is often the result of decreased conversion of dopamine to norepinephrine by the enzyme, dopamine beta-hydroxylase. This inhibition is commonly caused by Clostridia by-products, including HPHPA, 4-cresol, and 4-hydroxyphenylacetic acid, which are also measured in the OAT.
An elevated ratio is often the result of a decreased conversion of dopamine to norepinephrine by the enzyme, dopamine beta-hydroxylase. Inhibition of this enzyme is commonly caused by Clostridia byproducts, including HPHPA, 4-cresol, and 4-hydroxyphenylacetic acid.
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