Abstract Urea cycle disorders (UCDs) are a group of rare conditions. possibly life-threatening and without definitive cure besides liver transplantation. Traditional biochemical analyses/biomarkers cannot reliably determine changes in the UC-function from baseline to post-intervention. We describe a UHPLC-HRMS method to assess ureagenesis in plasma and dried blood spots for [15N]urea ... https://www.markbroyard.com/great-choice-fruit-cocktail-tree-for-sale-super-choice/