Twenty-four hour notification requires contacting which agency?

• A. FDA
• B. CDPH
• C. NRC
• D. OSHA

Answer: (B)

In California, urgent reporting of certain radiologic safety events goes to the state health authority that oversees radiologic health. A 24-hour notification is required to the California Department of Public Health (CDPH), Radiologic Health Branch, so they can quickly assess the incident and take appropriate action. This covers events like loss or damage of a sealed source, significant overexposure, or spills of radioactive material in a medical setting. The other agencies operate in different areas—FDA handles radiopharmaceuticals and medical devices, NRC handles federal licensing of nuclear materials, and OSHA focuses on general workplace safety—not the state-level rapid notification pathway for medical radiology incidents.