For the two Texas colonies, neither Dr. K. M. Heinz, who supplied the material to the authors, nor Dr. S. B. Vinson, who supplied the colonies to Heinz, were able to provide us with information on the provenance or chain of custody of the samples, nor could they tell us on what basis these samples were determined to have originated from polygyne colonies.
In that letter, the prosecutors addressed the chain of custody of urine samples for Bonds and said they could be verified by the "agents who transported the samples".
Dr. Elbert King, a geologist, who is curator of the Lunar Receiving Laboratory, will take custody of all samples of lunar material that the astronauts b bring back.
He said he could definitively establish chain of custody of the samples, which were taken from areas hit by gas bombs in Idlib province.
Biobank informatics enables investigators to track inventory and the chain of custody of biological samples, such as tissue and blood, used in basic, clinical, and translational research.
However, doubts have been expressed about the chain of custody of those samples as they travelled from their original locations in Syria to laboratories in other countries.
But it said it lacked information on the delivery system and the chain of custody for samples, and said therefore it could not "establish the link between the victims, the alleged event and the alleged site".
However, labs now have a cost-effective alternative that significantly speeds the process, improves the chain of custody for samples processing and provides standardized, more quantifiably comparable results.
Sherman's appeal was based on errors in the chain of custody of his sample and that there were mistakes made by the tester.
But according to a person briefed on the appeal, Sherman's argument was based on "slam-dunk facts" and, as in the case of the baseball player Ryan Braun, on a procedural argument: that the chain of custody of his urine sample was broken, negating the test result.
