Types Of Physical Evidence

All suspected blood, semen, or saliva- liquid or dried animal or human-present in a form to suggest in relation to the offense or the people involved in a crime. This includes blood or semen dried onto fabrics or other objects, as well as cigarette butts that contain saliva residue. These substances are subjected to serological and biochemical analysis to determine their identity and possible origin. 2. Documents- Any handwriting and typewriting submitted so that authenticity or source can be determined.

Related items include paper ink indented writings, obliterations, and charred documents. Store receipts are sometimes very useful because that can put a person at a location, with date, time, and if you’re lucky that location has video surveillance. 3. Drugs- Any substance seized in violation of laws regulating the sale, manufacture, distribution, and use of drugs. 4. Explosives- Any device containing an explosive charge, as well as all objects removed from the scene of an explosion that is suspected to contain the residues of an explosive. 5.

Fibers- Any natural or synthetic fiber whose transfer ay be useful in establishing a relationship between objects and/or people. 6. Fingerprints- All prints of this nature, latent and visible. 7. Firearms and ammunition- Any firearm, as well as discharged or intact ammunition, suspected of being involved in a criminal offense. 8. Glass- Any glass particle or fragment that may have been transferred too person or object involved in a crime. 9. Hair- Any animal or human hairs present that could link a person with a crime. 10. Impressions- Tire markings, shoe prints, depressions in soft soils, and all other forms of tracks.

Glove ND other fabric impressions, as well as bite marks in skin or foodstuff, are also included. 11. Organs and physiological fluids- Body organs and fluids are submitted for toxicology to detect possible existence of drugs or poisons. This category includes blood to be analyzed for the presence of alcohol and other drugs. 12. Paint- Any paint, liquid or dried, that may have been transferred from the surface of one object to another during the commission off crime. 13. Petroleum products- Any petroleum product removed from a suspect or recovered from a crime scene. For instance in an arson case. 14. Plastic bags.

A disposable polyethylene bag such as a garbage bag may be evidential in a homicide or drug case. 15. Plastic, rubber, and other polymers- Remnants of these manufactured materials recovered at crime scenes may be linked to objects recovered in the possession of a suspect perpetrator. 16. Powder residue- Any items suspected of containing firearm discharge residues. 17. Serial numbers- This category includes all stolen property submitted to the laboratory for the restoration of erased identification numbers. 18. Soil and minerals- All items containing soil or minerals that could link a person or object to a particular location. 19.

Tool marks- This category includes an object suspected of containing the impression of another object that served as a tool in a crime. 20. Vehicle lights- Examination of vehicle headlights and taillights is normally conducted to determine whether a light was on or off at the time of impact. 21. Wood and other vegetative matte- Any fragments of wood, sawdust, shavings, or vegetative matter Types Of Physical Evidence By Telethon location. The types of physical evidence that you should be looking for on most cases are: Body fluids, weapons & ammunition, fingerprints, hair, documents (receipts), drugs, tool marks (forced entry), and impressions.

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