Q&A column, 1/18
January 2018—We are in the process of validating the Stago STA Compact Max and Stago STA R Max with cap piercing. The company is stating that the open and closed modes follow the same testing pathway and therefore validation between modes is not necessary. Is this correct? Is PHI (phosphohexose isomerase), also known as GPI (glucose phosphate isomerase), mainly responsible for metastasis and circulating tumor cells?