épuration (1) métabolite (1) séparation des masses (physique) (1) analyse (1) extraction (1) âge (1) méthode (1) étalonnage (1) Calibration (1) Showing (1) Rates (1) Will (1) Water (1) Volunteers (1) Urine (1) Standards (1) Stability (1) Melatonin (1) Mass spectrometry (1) Helix pomatia (1) Excretion (1) Calibration (1) Age (1) Matrix effect (1) Will (1) Age (1) Analysis (1) Stability (1) Separation (1) Rates (1)