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Scottsdale Crime Lab: Blood Test Results Challenged

One of the most important pieces of evidence in a DUI case is the blood test result.  Once a subject’s blood is drawn, the sample is put into police custody. The blood in evidence is tested for alcohol, and results are reported as evidence. In Scottsdale, blood tests are the most common test conducted on someone who has been arrested for DUI. Since these results are being used to convict defendants and put them in jail or prison, ensuring that these results are reliable and trustworthy is an extremely serious matter, as Arizona has a reputation for having the toughest consequences for DUI convictions in America.  Despite the fact that a  DUI arrest can affect someone’s life and liberty, court documents and evidence now show that for the past 4 years, faulty machinery at the Scottsdale Crime Lab has been used to convict Scottsdale residents accused of DUI.

Eleven felony DUI cases have been consolidated together in the Maricopa County Superior Court to challenge the scientific reliability of this machine. Myself (Mark DuBiel), and attorneys W. Clifford Girard Jr., Joe St. Louis, and Lawrence Koplow have been investigating these problems for years. We are currently arguing whether or not the Scottsdale Crime Lab’s methodology and procedures meet generally accepted scientific standards under the Daubert standard (Daubert v. Merrell Dow Pharmaceuticals, Inc. 509 U.S. 579 (1993). The legal question here can be phrased bluntly: Can a machine that has been generating serious and unfixed errors almost every month for four years be considered trustworthy?

Information we have gathered so far and  presented to various local and national experts yields a resounding “NO.”

In 2009, old software was used on a then- new machine by a crime lab supervisor because the other analysts, police, and attorneys were used to reading the reports from the old machine. But according to the supervisor, the software was incompatible. Results given by the new machine inexplicably showed calibration errors on a face sheet of up to 100% error, errors later described as “gobbledygook” by the senior analyst.  Even more disturbing, vials of blood evidence which are specifically labeled with vial numbers corresponding to a unique case were being mislabeled . Far too often, the analysts didn’t acknowledge these errors  existed unless asked specifically about them in an interview or  being cross-examined in court.

In addition to producing these aforementioned calibration errors and mislabeled vials,  this machine has vial jams and drops data. These problems were also not readily provided to clients or their attorneys. They were only retrieved them by chance, and certainly not through Scottsdale. Yet, they were serious enough to prompt a call to the manufacturer Perkin & Elmer to try and fix the problem; in the Summer of 2010, the manufacturer sent out a software technician, who installed an un-vetted “software patch” on the problematic machine in an attempt to correct the problem.  But even after this “software patch” was installed, the problem didn’t go away.  After being questioned about the totality of errors that have been discovered to date, the manufacture has shockingly admitted that the machine should have been taken out of service. Even more incredible, one of the lab’s own analysts has admitted in a prior court hearing that the lab tried to return the machine to Perkin & Elmer, but the company refused to take it back. These errors continue to occur on a fairly regular basis, yet the lab has not documented these problems appropriately or taken the necessary measures to investigate and repair the machine. Although a “root cause failure analysis” is required under relevant scientific standards, one still has not been conducted.

Hearings will continue in the Maricopa County Superior Court on April 16, 2013. The final ruling in this case may affect how forensic scientific evidence is handled in future cases.  When convictions or judgments are made upon untrustworthy evidence, this seriously undermines confidence in the justice system, which is a concern not only for defendants charged with a crime, but for all citizens.

Links to further reading:

http://www.forensicmag.com/news/arizona-duis-question-over-lab-methods?et_cid=3182952&et_rid=454861408&linkid=http%3a%2f%2fwww.forensicmag.com%2fnews%2farizona-duis-question-over-lab-methods

http://www.azcentral.com/community/scottsdale/articles/20130405scottsdale-duis-question-over-lab-methods.html

http://www.gvnews.com/state/lab-results-in-scottsdale-dui-cases-challenged/article_84f9e9a4-0d6b-5063-9977-72f125c86fba.html

http://www.sfgate.com/news/crime/article/Lab-results-in-Scottsdale-DUI-cases-challenged-4414613.php

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