Can a split specimen be sent to a second laboratory that is under the same corporate title as the primary laboratory?

• Yes. The rule requires the split to be tested at a different or second HHScertified laboratory. For example, if the primary specimen was tested at XYZ  Laboratory in Dallas, TX, the split specimen may be sent to XYZ Laboratory in Chicago, IL. 

• HHS certifies each laboratory separately and on its own merits. Laboratories on the HHS listing of certified laboratories, even those under the same corporate title, are individually certified and are considered separate and unique from one another.

DOT Part 40 Questions and Answers