Course Number 2106 - Texas Commission on Law Enforcement

F. Buccal swabs can also be collected as a known DNA sample and are preferred over blood samples. 1. Use sterile cotton swabs to collect known saliva samples. 2. Rub the inside surfaces of the cheeks and gums thoroughly. 3. Air dry the swabs and place in a clean envelope with sealed . corners. 4. Do not use plastic containers. 5. ................
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