JusticeWillBeServed
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Rochat defense expert criticizes DNA testing by prosecutor's office
http://www.northjersey.com/story/news/crime/2017/06/08/rochat-defense-expert-criticizes-dna-testing-prosecutors-office/379183001/
http://www.northjersey.com/story/news/crime/2017/06/08/rochat-defense-expert-criticizes-dna-testing-prosecutors-office/379183001/
According to Coyle, the test to determine the presence of blood was inconclusive. She said the leuco crystal violet [LCV] should not have been used to determine if blood was present and that a Kastle Meyers test should have been performed first. Coyle's argument was that a Kastle Meyes test confirms the presence of human blood while LCV can fluoresce at the presence of hemoglobin, plant material, animal blood or heavy metals.
Potter focused on the fingernail clippings taken from Vernieri, where small amounts of DNA were found. A YSDR test was performed on the clippings, which is used in specific cases where there is a mix of male and female DNA and specifically targets male DNA. Coyle examined a summary chart of the YSDR tests and said that there were gaps in the data because of the small amounts of DNA found underneath Vernieris fingernails.
The test revealed that, statistically Rochat or any of his paternal relatives could be a match for the DNA, but it was a relatively low match and that one in 333 people would have the exact same result. When Coyle did her own testing, she said her results were one in 379 due her testing being done at a later date, therefore the database was updated.