| 释义 |
urinary free catecholamines urinary free catecholamines The free/nonbound and nonmetabolized catecholamines, epinephrine and norepinephrine, excreted in urine in 24 hrs which, normally, is 2-4% of the total catecholamine production Ref range < 600 nmol/24 hrs–US: 100 µg/24 hrs, of which 473 nmol/24 hrs–US: 80 µg/24 hrs is norepinephrine, and 109 nmol/24 hrs–US: 20 µg/24 hrs is epinephrine. Cf Total catecholamine test. |