Penelope Trimpou, Daniel S. Olsson, Olof Ehn, Oskar Ragnarsson
OBJECTIVE: Diabetes insipidus (DI) and primary polydipsia (PP) are characterised by polyuria and polydipsia. It is crucial to differentiate between these two disorders since the treatment is different. The aim of this study was to evaluate the diagnostic value of the short and an extended variant of the water deprivation test (WDT) and of measuring urinary vasopressin (AVP) in patients with polyuria and polydipsia.
DESIGN: A retrospective, single-centre study based on WDTs performed …