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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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Title 10
Chapter I
Part 35
Subpart E - Subpart E—Unsealed Byproduct Material—Written Directive Required
§ 35.300 - Use of unsealed byproduct material for which a written directive is required.
§ 35.310 - Safety instruction.
§ 35.315 - Safety precautions.
§ 35.390 - Training for use of unsealed byproduct material for which a written directive is required.
§ 35.392 - Training for the oral administration of sodium iodide I-131 requiring a written directive in quantities less than or equal to 1.22 gigabecquerels (33 millicuries).
§ 35.394 - Training for the oral administration of sodium iodide I-131 requiring a written directive in quantities greater than 1.22 gigabecquerels (33 millicuries).
§ 35.396 - Training for the parenteral administration of unsealed byproduct material requiring a written directive.
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