AVP and Central diabetes insipidus: There was no significant difference in basal nor stimulated plasma copeptin concentrations in patients with central diabetes insipidus between the KRYPTOR or the LIA (basal p-value = 0.52, stimulated p-value = 1), but the ELISA reported significantly higher copeptin concentrations compared to both assays (basal and stimulated p-value < 0.001).