I am awaiting test results for hyperaldosteronism as well. I've suffered from hbp since my 20's as well as an anxiety disorder. In the beginning, all tests done could not find out cause of hbp other than to be anxiety induced.
Nearly 20 years later, my cardiologist suggested this test due to my decreased potassium levels over the last couple years which is a direct relation ot hyperaldosteronism. some studies also relate hyperaldosteronism to anxiety.
If test results come back positive...i'll be somewhat relieved that they can finally treat the problem and not just the symptoms.