Endocrine Abstracts

Background: The aldosterone to renin ratio (ARR) is a useful screening test for primary aldosteronism. Renin can be measured as activity or concentration; the accuracy of the ARR depends on these measurements and the factors that may affect them. We carried out two studies; the first assessed the correlation between plasma renin concentration (PRC) and renin activity (PRA) and the agreement between them using two anticoagulants (EDTA and lithium heparin). The second evaluated ...