abnormal circulating adrenaline level decreased circulating adrenaline level MP:0005661 MPheno.ontology decreased circulating epinephrine level less than the normal concentration in the blood of a catecholamine hormone that stimulates the adrenergic receptors and that causes systemic vasoconstriction and gastrointestinal relaxation, stimulates the heart, and dilates bronchi and cerebral vessels reduced circulating adrenaline level