- 01 Introduction
- 02 Biology of DNA
- 03 Practical Issues Specific to DNA Evidence
- 04 Introduction to the Forensic DNA Laboratory
- 05 Assuring Quality in DNA Testing
- 06 Understanding a Forensic DNA Lab Report
- 07 Statistics and Population Genetics
- 08 Mitochondrial DNA & Y-STR Analysis
- 09 Forensic DNA Databases
- 10 Collection of DNA Evidence from Suspects and Arrestees
- 11 Pretrial DNA Evidence Issues
- 12 Victim Issues
- 13 Trial Presentation
- 14 Postconviction DNA Cases
- 15 Emerging Trends
Principles of Forensic DNA
for Officers of the Court
for Officers of the Court
Module 4 :: Intro To the Lab
Topic 2 :: Laboratory Processes Used in Forensic DNA Analysis
Evidence Screening
The first step performed in the laboratory is the screening of the evidence. The evidence is inventoried, documented, and evaluated for useful biological evidence. Once stains or other biological material of interest are located, they may be subjected to presumptive and confirmatory testing in an attempt to identify the type of biological material present (e.g., blood, semen, saliva).
