serum angiotensin-converting enzyme was elevated in patients with hyperthyroidism ( 72 +/- 31 nmol/minute/ml , n = 12 , p less than 0.001 ) but not in patients with hypothyroidism ( 38 +/- 3 , n = 3 ) or thyroiditis ( 26 , n = 1 ) , and was positively correlated in 23 patients with serum thyroxine concentration ( r = 0.60 , p less than 0.01 ) and triiodothyronine resin uptake ( r = 0.56 , p less than 0.01 ) .
C0020676
hypothyroidism
C0040165
thyroxine