hi; gThank you for answering my question, I am 61 years old female, I recently experienced high blood pressure and my doctor ordered the 24 hr urine test.vin I just got my result for metanephirine urine 24 hrs test , the result is 26, ( normal range 45-290 ug/24hr). it seems very low, what causes it, what would the symptom of having low metanephrine level? should I be concerned and take medications to bring it to normal level?
Hello and welcome to Chat Doctor, I read your question carefully, and I understand your concern. Please, do not worry. 24 hour urine metanephrines are tested to rule out a Chat Doctor.  Pheochromocytoma is a catecholamine secreting tumor which presents with high blood pressure, headaches palpitations and sweating. Negative test results rule out phechromacytoma as the cause of hypertension. Low metanephrines in the urine indicates a