For how long must records of Mo-99 concentration in Tc-99m elution be kept according to the NRC?

Records of Mo-99 concentration in Tc-99m elution must be retained for three years according to the Nuclear Regulatory Commission (NRC) regulations. This duration ensures that there is adequate traceability and oversight related to the handling of radioactive materials, which is essential for maintaining safety standards and compliance in radiopharmacy practices. The three-year retention period allows for a sufficient time frame to investigate any potential safety or regulatory issues that may arise regarding the radiopharmaceuticals used in patient care.

While there are variations in documentation requirements across different regulatory bodies, the NRC specifies three years for Mo-99 records to ensure consistency in monitoring and accountability concerning the use of radioactive substances in medical applications.