- Course Introduction
- 01: Evidence & DNA
- 02: Forensic Biology
- 03: DNA Extraction & Quantitation
- 04: DNA Amplification
- 05: Amplified DNA Product Separation
- 06: STR Data Analysis & Interpretation
- 07: Population Genetics & Statistics
- 08: Communicating Results
- 09: Other DNA Markers & Technologies
- Course Resources
- Laboratory Training Manual
President's DNA Initiative
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Advancing Justice Through DNA Technology
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Advancing Justice Through DNA Technology
DNA Analyst Training
Feces
Home > Forensic Biology > Testing of Body Fluids & Tissues > Feces
Feces are food residues passed after completion of travel through the digestive system. Feces have a characteristic odor mainly due to skatole. Laboratories may be requested to test stains or other samples for the presence of feces. This occurs in the investigation of anal intercourse or where perpetrators have fouled a crime scene. The screening of samples depends on the detection of urobilinogen, a bile pigment excreted in feces, which may be detected using its fluorescent reaction to Edelman’s reagent.
