Shortly after its development in 1985, DNA testing became a powerful defense tool. It enabled offenders to challenge criminal convictions by presenting new evidence connected to their own unique DNA.
According to the National Registry of Exonerations, DNA evidence cleared 593 out of 3461 convicted offenders from 1989 to 2023. The registry tallied 24 exonerations in 2023.
When DNA evidence negates misidentification
More than half of the DNA exonerations reversed decisions caused by eyewitness misidentification. The most common types of wrong identification involved in-court questioning and photo array selection.
Witnesses also made misidentifications in a show-up procedure, in-person lineup and one-on-one photo process. Others committed errors after choosing from a mugshot book, judging by voice, using a composite sketch and going through hypnosis.
Requesting for a post-conviction DNA analysis
Convicted offenders can request for DNA testing by reasoning that there was no available analysis during the trial. They can also point out that current advances in technology can alter previous DNA results.
Despite its accuracy, there are still a few risks to DNA testing due to contamination:
- Collection: Improper procedures in collecting pieces of evidence can introduce variables that impact results.
- Storage: Samples may face contamination because of unclean containers, improper handling and wrong temperatures in storage areas.
- Analysis: There can be cross-contamination when laboratory staff fail to use gloves and touch different samples.
Another concern is the amount taken during sampling. A laboratory may deem the sample quantity as insufficient for testing.
A beacon of hope in the face of conviction
Getting a criminal sentence is terrifying and disconcerting for you and your loved ones. But there is hope for post-conviction relief.
As you claim innocence, you can consider the effectivity of DNA testing while weighing its costs, risks and benefits. It may be the key to reverse a conviction and give you the compensation and damages you deserve. Ultimately, it can help you get your life back on track.