Comprehensive Toxicology Expertise

Objective forensic toxicology consultation and expert analysis supporting attorneys and government agencies throughout case preparation and litigation.

Case Review & Evaluation

  • Comprehensive review of DUI/DUID evidence
  • Assessment of strengths and weaknesses
  • Identification of scientific and procedural issues
  • Independent expert opinions

Alcohol Analysis

  • Blood alcohol concentration (BAC) interpretation
  • Breath alcohol testing review
  • Retrograde extrapolation
  • Alcohol absorption and elimination
  • Blood-to-breath ratio considerations

Drug-Impaired Driving

  • Prescription and illicit drug interpretation
  • Therapeutic vs. impairing concentrations
  • Poly-drug interaction assessments
  • Drug metabolism and pharmacokinetics
  • Evaluation of DRE findings

Laboratory Evidence Review

  • GC/MS, GC-FID and LC-MS/MS data interpretation
  • Chromatographic data review
  • Method validation review
  • Quality assurance and quality control
  • Instrument performance evaluation
  • Calibration and control review

Discovery Review

  • Toxicology reports
  • Raw analytical data
  • Chromatograms
  • Calibration curves
  • Instrument maintenance records
  • Chain-of-custody documentation
  • Laboratory SOP review

Expert Reports

  • Written expert opinions
  • Scientific rebuttal reports
  • Discovery summaries
  • Trial preparation reports

Attorney Support

  • Case strategy consultation
  • Scientific education
  • Assistance preparing cross-examination questions
  • Deposition preparation
  • Witness preparation

Expert Witness Services

  • Expert witness testimony
  • Deposition testimony
  • Trial testimony
  • Courtroom exhibits and scientific demonstrations

Specialized Areas

Alcohol-related DUI cases
Polydrug cases
Laboratory error investigations
Drug-impaired driving
Post-driving alcohol consumption ("hip flask") claims
False-positive evaluations
Prescription medication impairment
Rising blood alcohol defenses
Chain-of-custody disputes

Need a Forensic Toxicology Review?

Contact Valley Scientific LLC to discuss your case, toxicology evidence, or expert witness needs.