The Use of Tricycle Antidepressants by an Individual May Produce

Multiple Choice

The use of tricycle antidepressants by an individual may produce incorrect results in the measurement of norepinephrine and normetanephrine during testing for pheochromocytoma.How will results be affected and why?

A) The results will be falsely elevated because of inhibition of monoamine reuptake.
B) The results will be falsely decreased because of increased synthesis of monoamine oxidase.
C) The results will be falsely elevated because these drugs increase synthesis of dopamine.
D) The results will be falsely decreased because these drugs inhibit tyrosine hydroxylase.