What does low levels of metanephrine in urine mean
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Answer:
Normal urine levels of metanephrine and normetanephrine mean it is unlikely that the person tested has a catecholamine-secreting tumor. ... Elevated levels of metanephrine and normetanephrine in a person with signs and symptoms suggest the presence of a tumor.
When you have signs and symptoms of increased catecholamines release, such as sudden bursts (paroxysms) of high blood pressure (hypertension), severe headaches, rapid heart rate (palpitations), sweating, tremors and pallor; when hypertension does not respond to standard treatments; when the signs and symptoms occur in a relatively young person (younger than age 40) and when there is a family history of hypertension; when your healthcare provider suspects you may have a tumor that is releasing or may release excess catecholamine
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