The internal standard set provides the quantification of the Mycophenolic acid and its glucuronide MPA-G in plasma samples using in-house stable labeled internal standards (with deuterium and carbon-13), produced by Alsachim. These internal standards permit to avoid matrix effects. The Set is composed by Internal Standard pool (lyophilized) and reconstitution buffer. Content: internal standard pool (lyophilized) - 3x 2,5mL + reconstitution buffer 15 mL