heart left ventricle deoxyribonucleic acid composition measurement +
heart left ventricle epinephrine level +
heart left ventricle natriuretic peptide A level
heart left ventricle norepinephrine level +
The amount in a specified sample of tissue from the heart left ventricle, of norepinephrine, a catecholamine neurotransmitter and stress hormone with multiple physiological roles including affects on heart rate, blood pressure and vascular tone.