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Time Required to Perform Laboratory Analysis
Step 2: Body Fluid Stain/Tissue Identification
The extent of this step varies from laboratory to laboratory. Some laboratories perform only preliminary tests, which are frequently less time-consuming but are not definitive. In addition to preliminary testing, laboratories may perform confirmatory testing on stains that have a positive preliminary test result. Confirmatory tests are highly discriminating and allow the analyst to report the origin of the fluid/tissue with a high degree of scientific certainty. These tests typically require significantly more time to perform.
Additional Online Courses
- What Every First Responding Officer Should Know About DNA Evidence
- Collecting DNA Evidence at Property Crime Scenes
- DNA – A Prosecutor’s Practice Notebook
- Crime Scene and DNA Basics
- Laboratory Safety Programs
- DNA Amplification
- Population Genetics and Statistics
- Non-STR DNA Markers: SNPs, Y-STRs, LCN and mtDNA
- Firearms Examiner Training
- Forensic DNA Education for Law Enforcement Decisionmakers
- What Every Investigator and Evidence Technician Should Know About DNA Evidence
- Principles of Forensic DNA for Officers of the Court
- Law 101: Legal Guide for the Forensic Expert
- Laboratory Orientation and Testing of Body Fluids and Tissues
- DNA Extraction and Quantitation
- STR Data Analysis and Interpretation
- Communication Skills, Report Writing, and Courtroom Testimony
- Español for Law Enforcement
- Amplified DNA Product Separation for Forensic Analysts