Module 10 :: Collection of DNA
Topic 2 :: Key Legal Issues Surrounding the Collection of DNA Evidence
Consent
The alternative to obtaining a warrant is to secure a person's consent to giving a DNA sample. The principles governing consent are simple: The consent must be voluntary.14
If there is an illegal arrest or detention, a subsequent consent will not be valid if it is the fruit of that illegality. Such consent may be valid, however, if there are intervening events (such as a consultation between the suspect and counsel) that attenuate the effect of the illegal arrest or detention.15