Archived | Principles of Forensic DNA for Officers of the Court | Testing Considerations (cont.)

photo of gloved hand cutting off the tip of a cotton swab with blood on it. — National Institute of Justice (NIJ) (see reuse policy).

Although DNA analysis is a highly sensitive technique, it still requires a certain amount of biological material. If the sample is very small, it may be completely consumed in the analysis process. When possible, a portion of the original evidence is retained for future testing.

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Date Created: June 9, 2023