The investigator then packages and seals the evidence to prevent contamination. Labeling or marking each package accordingly allows for easy identification in the forensics lab or evidence room. Once at the lab, a forensic scientist analyzes the evidence and sends the results to detectives working the case. To maintain an accurate and complete record, these examples of chain of evidence elements must be met:Limit the number of people handling evidenceConfirm all names, identification numbers, and dates on the chain of evidence documentsSeal the packageDouble check markings before submissionObtain signed receipts upon transfer