Patients' uNMN levels
measured by LC–MS/MS during or after amoxicillin therapy were similar
(Table 1) and resulted to be similar to those obtained from agematched
healthy controls (mean uNMN values = 140 μg/g Cr). On the
contrary, uNMN levels obtained from a patient affected by pheochromocytoma
were higher (9141 μg/g Cr).