Quality Control (QC) refers to operational checks performed to confirm that specific trial deliverables, data, or documents meet defined acceptance criteria.
QC activities can include verification of consent documentation, data review for completeness and consistency, checklists for essential documents, and validation of outputs before database lock or submission. QC is typically embedded in daily workflows and is performed by study teams, data management, or document specialists. Effective QC reduces errors that can lead to protocol deviations, data queries, or inspection findings. Consistent QC supports reliable data integrity and strengthens confidence in study results and regulatory deliverables.