- 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 14 :: Postconviction
Topic 2 ::
Biological and Laboratory Issues
Sample Selection
Caution should be exercised to select samples for testing that provide the greatest likelihood of meaningful results for a particular case. It may be necessary to consider previously collected evidence samples to determine if—
- Other relevant evidence samples exist that could be tested.
- Samples exist containing biological material that was previously undetected or not evaluated by the laboratory.
- Samples have been retained that were unsuitable for testing with previous techniques but may provide probative results with current technology.
