Course Number 2106 - Welcome to Texas Commission on Law ...

anticoagulant for DNA analysis and drug or alcohol-testing samples in . gray-top tubes with NaF (sodium fluoride). C. Each tube should be identified with the date, time, subject’s name, location, collector’s name, case number, and evidence number. D. Refrigerate, do not freeze blood samples. Use cold packs, not dry ice . during shipping. ................
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