Code of Federal Regulations > Title 10 > Chapter I > Part 26 > Subpart G - Subpart G—Laboratories Certified by the Department of Health and Human Services

U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

§ 26.151 - Purpose.

§ 26.153 - Using certified laboratories for testing specimens.

§ 26.155 - [Reserved]

§ 26.157 - Procedures.

§ 26.159 - Assuring specimen security, chain of custody, and preservation.

§ 26.161 - Cutoff levels for validity testing.

§ 26.163 - Cutoff levels for drugs and drug metabolites.

§ 26.165 - Testing split specimens and retesting single specimens.

§ 26.167 - Quality assurance and quality control.

§ 26.168 - Blind performance testing.

§ 26.169 - Reporting Results.