part of regulation of systemic arterial blood pressure by circulatory renin-angiotensin regulation of angiotensin levels in blood https://github.com/geneontology/go-ontology/issues/15424 control of angiotensin levels in blood regulation of blood angiotensin level GO:0002002 biological_process control of blood angiotensin level The process that modulates the level of any of the various angiotensinogen proteolytic products in the blood. This occurs by the proteolytic cleavage of angiotensinogen, and its proteolytic products, to create a variety of active peptide hormones, such as angiotensin I and angiotensin II, as well as through the removal of these peptides from the circulation. regulation of hormone levels