[Code of Federal Regulations] [Title 46, Volume 1] [Revised as of Octobery 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR4.06-10] [Page 46] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 4_MARINE CASUALTIES AND INVESTIGATIONS--Table of Contents Subpart 4.06_Mandatory Chemical Testing Following Serious Marine Incidents Involving Vessels in Commercial Service Sec. 4.06-10 Required specimens. Each individual required to submit to chemical testing shall, as soon as practicable, provide the following specimens for chemical testing: (a) Urine specimens, collected in accordance with Sec. 4.06-20 and part 16 of this chapter. (b) Blood or breath specimens, or both, collected in accordance with Sec. 4.06-20.