The MiChem team will delve into the critical process of data review as part of maintaining compliance with ISO/IEC 17025 and ISO 15189 standards. We will further discuss how to effectively analyse data trends, such as proficiency testing (PT) and non-conformance (NC) trending, to identify potential issues early on. The session will guide attendees in spotting red flags and implementing timely corrective actions, ensuring the ongoing reliability and integrity of laboratory operations.