Will a nonfunctioning benign tumor on an adrenal gland cause hypertension?

It may not be as non-functioning as they think. If they are testing renin and aldosterone, I know that renin is a very fussy test. It has to be spun immediately and frozen right out of the centrifuge to be accurate.

I get that test all the time. I get that and another test that is fussy and it is next to impossible to get them done accurately as they degrade quickly in the bin. Try getting the lab tech to spin it fast next time and see how it goes.