Collection, Preservation, Evaluation & Chain of Custody
The Collection, Evaluation, Preservation, and Chain of Custody of Evidence
Collection, preservation, and securing of evidence are critical from the time it is collected. Completion of a chain of custody documentation is also critical.
As a rule, you need to be aware of what you are doing and ensure the presence of your mind. Do not be overwhelmed, or excited with what you discovered or uncovered. Many investigators forget some measures and prohibitions out of curiosity.
Collect evidence correctly, preserve each specimen separately, use and change gloves often, avoid coughing or sneezing during the collection, use appropriate tools such as cotton-tipped applicators, sterile water, cardboard swab boxes, separate paper bags, and envelopes to prevent cross-contamination of samples collected.
Allow swabs to dry thoroughly, dry with cool air only, no heat, package in a vented swab container box or paper. Do not use plastic. All these steps will preserve the integrity of the samples collected.
To maintain accurate identification, each sample must be labeled with the case or incident identifying information—-
Our video below will elaborate on every step as you proceed to your task, so WATCH IT!
NOTE: DO NOT CLICK THE COMPLETE BOX BELOW, you still have an unfinished module!
Now you are through with the collection of evidence, proceed to the next video by clicking the GREEN arrow below!