Situations where redesignation is indicated:
(1) bottles A and B are sealed; bottle A has leaked; bottle B has sufficient urine for testing
(2) bottles A and B are sealed; primary bottle is designated B; secondary bottle is designated A
(3) bottles A and B sealed; laboratory opens bottle B instead of A; bottle B has sufficient urine for testing
(4) seal on bottle A broken; bottle B sealed; bottle B has sufficient urine for testing
(5) bottle B is sealed; bottle A is not received; bottle B has sufficient urine for testing
If bottle A is sealed and bottle B is not received, leaking or not sealed, then testing is performed on bottle A. No redesignation is necessary.
Split sample testing can be performed in situations 2 and 3.
Split sample testing cannot be performed in situations 1, 4 and 5, or if there is a problem with bottle B.
Any other problem constitutes a fatal flaw.
When redesignating an unbroken seal:
(1) The original A or B is crossed out
(2) The new letter A or B is written in
(3) The person making the change dates and initials the changes
(4) An explanation is made on the chain of custody form explaining the reason.
