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The FAA's postmortem forensic toxicology self-evaluated proficiency test program: the second seven years.

Arvind K Chaturvedi1, Kristi J Craft, Patrick S Cardona

  • 1Bioaeronautical Sciences Research Laboratory (AAM-610), Aerospace Medical Research Division, Civil Aerospace Medical Institute, Federal Aviation Administration, U.S. Department of Transportation, Oklahoma City, OK 73125-5066, USA. arvind.chaturvedi@faa.gov

Journal of Analytical Toxicology
|May 28, 2009
PubMed
Summary

The Federal Aviation Administration's (FAA) forensic toxicology proficiency testing (PT) program ensures quality control for aviation accident investigations. While most labs accurately identified analytes, some concerning false positives were noted.

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Area of Science:

  • Forensic Toxicology
  • Aviation Safety
  • Analytical Chemistry

Background:

  • Maintaining high quality control/quality assurance (QC/QA) is critical in toxicological evaluations of fatally injured pilots.
  • The Federal Aviation Administration (FAA) established a forensic toxicology proficiency-testing (PT) program in 1991 to uphold these standards.

Purpose of the Study:

  • To summarize the findings of the FAA's forensic toxicology proficiency testing (PT) program over an additional seven-year period.
  • To assess the performance of laboratories involved in analyzing samples from civil aviation accidents.

Main Methods:

  • Twenty-eight survey samples (urine, blood, tissue homogenate) containing various analytes were distributed.
  • An average of 31 laboratories participated, with results returned by an average of 25 laboratories.

Main Results:

  • Participants generally demonstrated accurate identification and quantification of analytes in the survey samples.
  • A notable number of false positives were reported, indicating areas for improvement.

Conclusions:

  • The FAA's PT program is a vital component of QC/QA for forensic toxicology laboratories.
  • Continued participation and attention to accuracy, particularly regarding false positives, are essential for laboratory accreditation and aviation safety.