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What can lead to a false postive on a pheochromocytoma test?

Certain medications and certain conditions can lead to false positive results (a positive test in someone who does not have pheochromocytoma):
  • Tricyclic antidepressants (including cyclobenzaprine hydrochloride)
  • Levodopa
  • Ethanol (alcohol) withdrawal
  • Withdrawal from clonidine and other drugs (e.g., elicit drugs)
  • Antipsychotics, buspirone hydrochloride, and bupropion hydrochloride
  • Amphetamines
  • Prochlorperazine
  • Reserpine
  • Major physical stress (e.g., surgery, stroke)
  • Obstructive sleep apnea syndrome
Check with your doctor before being tested and be sure he or she knows all of your medications. Other available tests include suppression and provocative testing that are rarely, if ever, needed. Provocative tests can cause life-threatening high blood pressure. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.