Biochemistry Test

4-hydroxy3-methoxymandelic acid in urine

Dr. Simi Paknikar
Medically Reviewed by Dr. Simi Paknikar, MD
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Test : 4-hydroxy3-methoxymandelic acid in urine

Indications : hypertension

Physiology : Also known as vanillyl mandelic acid and it is estimated in 24 hours urine sample. It is a catabolic product of catecholamines.

Normal Range : Daily excreation-2-6mgs/day.

Interpretation : Increased levels are seen in pheochromocytoma. Decreased levels are due to consumption of lipid lowering drugs.

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