We are independent & ad-supported. We may earn a commission for purchases made through our links.
Advertiser Disclosure
Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.
How We Make Money
We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently of our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What Are the Different Techniques for Evidence Preservation?

Leigia Rosales
Updated May 17, 2024
Our promise to you
WiseGeek is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At WiseGeek, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject-matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

A law enforcement officer's ability to solve a crime may depend on proper evidence preservation at the scene of the crime. Most crime scenes leave a plethora of evidence that must be meticulously collected and then preserved in order to provide investigators with clues used to solve the crime. Proper evidence preservation starts with securing the scene of the crime and making notations about how the scene appeared when the first responders arrived. Next, each piece of evidence must be carefully collected and placed in the appropriate container depending on what type of evidence it is. Once collected, the evidence must be preserved or stored correctly in order to be able to use it at trial or test it for clues.

When first responders arrive at the scene of a crime, the most important stage of evidence preservation begins. First responders must be certain not to disturb the scene and must secure the area immediately. The proper personnel should be contacted, such as the coroner, detectives, or crime scene investigators, and detailed notes should be taken regarding the condition of the scene upon arrival.

Once the proper personnel arrive, each potential piece of evidence must be properly collected. Fragile evidence, or evidence that may be easily destroyed or mutilated, should be collected first. Techniques involved in evidence preservation include collecting the evidence with the appropriate tools and then preserving the evidence in the appropriate type of container.

Understanding how to collect the evidence is crucial. For example, hair evidence should be collected with tweezers and placed in a seal-tight plastic bag. Fingerprints are usually gathered by dusting and then lifting the print and placing it on a slide. Blood evidence is generally gathered with the appropriate cotton swab or gauze and then air-dried and properly refrigerated.

Once the evidence has been collected, evidence preservation requires that it be properly preserved for a number of reasons, including use at trial, study, and return to the owner, in some cases. In most jurisdictions, the original evidence collected at a crime scene must be presented at a trial, which requires proper preservation of the evidence. In addition, many types of evidence, such as hair, fingerprints, or blood evidence, may be used by forensic scientists to gather additional clues, such as a DNA profile or fingerprints of a potential suspect. In some cases, the evidence must be returned to the proper owner if it is not used at trial, or if it turns out to be irrelevant to the case.

WiseGeek is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Leigia Rosales
By Leigia Rosales
Leigia Rosales is a former attorney turned freelance writer. With a law degree and a background in legal practice, she crafts compelling content that informs and engages readers. Her ability to understand complex topics and communicate them effectively makes her a valuable asset to any content creation team.
Discussion Comments
Leigia Rosales
Leigia Rosales
Leigia Rosales is a former attorney turned freelance writer. With a law degree and a background in legal practice, she...
Learn more
WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.

WiseGeek, in your inbox

Our latest articles, guides, and more, delivered daily.