The main questions it aims to answer are:~Can we diagnose more people if we used 24 hour urine measurements?~In those with high amounts of aldosterone in their urine, is there a variable pattern to their aldosterone production?~Participants will have a 24 hour urine measurement. They will also have multiple blood tests throughout the day to study the variability in aldosterone secretion.
The goal of this observational study is to see if there is a cyclical or exaggerated diurnal variation in aldosterone production in people with Primary Aldosteronism.