A repeated assay and missing original data

A quality laboratory obtains an out-of-specification assay result on a pharmaceutical sample. A second analyst repeats the measurement and obtains a value within the expected range, then proposes deleting the first result because the later value appears more convenient. The calibration record, sample preparation and possible interference have not yet been reviewed. The product has a normal appearance, and a manager assumes that this excludes degradation. The team needs to distinguish method performance, specimen integrity, an actual quality defect and the scope of the investigation. Repeated testing is useful only within a justified documented process that preserves evidence rather than selecting a preferred passing outcome.