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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Mar 23, 2025
All Titles
Title 10
Chapter I
Part 26
Subpart F - Subpart F—Licensee Testing Facilities
§ 26.121 - Purpose.
§ 26.123 - Testing facility capabilities.
§ 26.125 - Licensee testing facility personnel.
§ 26.127 - Procedures.
§ 26.129 - Assuring specimen security, chain of custody, and preservation.
§ 26.131 - Cutoff levels for validity screening and initial validity tests.
§ 26.133 - Cutoff levels for drugs and drug metabolites.
§ 26.135 - Split specimens.
§ 26.137 - Quality assurance and quality control.
§ 26.139 -
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