Chicago Police Department (CPD) Practice Exam 2025 - Free CPD Practice Questions and Study Guide

The success of CPD investigations heavily relies on the chain of custody and evidence preservation procedures. Maintaining a clear and documented chain of custody is essential to ensure that evidence remains uncontaminated and its integrity is preserved throughout the investigative process. This careful handling provides a reliable foundation for legal proceedings and helps to maintain the credibility of the evidence presented in court.

Evidence preservation procedures are also critical because they dictate how evidence is collected, stored, and analyzed, preventing tampering or degradation. If these procedures are not followed thoroughly, it can lead to questions about the authenticity or admissibility of the evidence, potentially jeopardizing the entire case. Thus, upholding these practices safeguards the integrity of the investigation and supports the overarching goal of achieving justice in the community.