 From June 2013, all newly diagnosed patients with Primary Aldosteronism PA either diagnosed at Haukeland University Hospital HUS or admitted to HUS for subtype testing with adrenal vein sampling, have been asked for inclusion in the study. All included patients have a base-line study visit where baseline blood samples ar collected. Until 2017, a 24h blood-pressure-monitoring and echocardiography was also performed. After start of definite medical or surgical treatment the patients are followed up with regularly new study visits. 