Describe the procedure in collecting blood evidence
What will be an ideal response?
1. If the blood is wet, a sterile swab should be rotated in the stain, transferring the blood onto the swab. The swab should be dried thoroughly, packaged in a bindle or a swab container, and stored frozen.
2. If the blood is dry, the forensic technician should scrape the dried blood into a bindle. Alternatively, the technician can place a drop of distilled water on a sterile swab, swab the bloodstain, dry the swab thoroughly, and package the swab in a bindle or swab holder, and store frozen.
3. If possible, a control sample should be taken from the area adjacent to the blood evidence. The control sample is collected by following the same procedure used to obtain the blood evidence. Place a drop of distilled water on a sterile swab, swab an area adjacent to blood evidence, dry thoroughly, package in a bindle or swab container, and freeze. This evidence should be labeled as the control sample for the blood evidence.
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