What is the minimum storage duration for abnormal cytology cases?

Abnormal cytology cases must be stored indefinitely because they represent significant findings that can have diagnostic and clinical importance over time. These samples may be needed for future reference, whether for further testing, comparing with new findings, legal reasons, or for patient care continuity. The indefinite retention of these cases ensures that clinicians and pathologists have access to the information they require should a patient's condition change or new treatment options become available.

Additionally, retaining abnormal samples allows for the possibility of audit and quality assurance, enabling laboratories to maintain high standards in diagnostics. While timeframes for retaining other types of specimens may differ based on regulations or clinical guidelines, abnormal cytology is treated with heightened importance due to its implications for patient health.