To some degree: To define whether there is a functional pheo one draws blood levels of catacholamines which are expressed by and secreted into the serum by the tumor.Caffeine intake, cigarette smoking, and other sympathomimetic factors may increase catecholamine levels through the adrenergic receptors and should be discontinued for at least 24 hours before a blood sample is obtained.
Answered 2/20/2015
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Pheochromocytoma: Different patients may have triggers that cause pheo crisis. Happy to do 2nd opinion to help figure out what is going on. Do not mess with pheochromocytoma. It is deadly.
Answered 10/28/2016
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