International Forensic Science Consultants is a consultancy, not a testing laboratory. We do not perform analysis or identify evidence; instead, our consultants bring decades of hands-on forensic experience to reviewing, interpreting, and explaining the work of others. Cases involving forensic evidence are complex and hard to understand without advanced training. Our task is to help you and the jury make sense of that complexity, and to reduce it to plain language.

Our case consultation services include:**

• Evidence review — independent review of all evidence types, including but not limited to toxicology, DNA, firearms and toolmarks, controlled substances, digital evidence, fingerprints, and autopsy findings.

• Data and procedure review — evaluation of chain-of-custody documents, the qualifications and experience of the forensic analysts, the validity of the analytical and quality-control procedures used, the accuracy of the reported results, and the soundness of the conclusions reached.

• Case strategy — advice on the approaches available in light of the forensic evidence, including possible retesting, questions to put to opposing experts, and weaknesses in the evidence.

Toxicology Intrepretation

Forensic toxicology is the core of our practice. Toxicology results are generated from many kinds of samples — blood, urine, hair, tissue, and other specimens, in both living subjects and death investigations — and they rarely speak for themselves. Interpreting them correctly takes experience with how drugs and alcohol are absorbed, distributed, metabolized, and eliminated, and with how those processes change after death. Our consultants have directed accredited toxicology laboratories earlier in their careers and have testified in state, federal, and U.S. military courts. We interpret and review toxicology findings for prosecution, defense, and civil counsel, including:

• Alcohol and drug impairment (DUI/DWI/DUID) — absorption, elimination, retrograde extrapolation, and the interpretation of field and laboratory tests.

• Postmortem toxicology — interpretation of drug findings in death investigations, including tolerance, drug interactions, and postmortem redistribution.

• Drug-facilitated crimes — the pharmacology and toxicology of drug-facilitated sexual assault, including alcohol congener analysis.

• Drug interactions and adverse effects — clinical and forensic evaluation of prescription and illicit drug combinations and their effects.

• Emerging drugs — xylazine, novel psychoactive substances, and evolving drug threats.

Other Forensic Disciplines

Beyond toxicology, our consultants and network provide independent review across the forensic sciences. We do not test or identify evidence; we evaluate the methods, quality controls, and conclusions behind it in:

• DNA — review of DNA typing results, mixture interpretation, statistics, and laboratory procedures.

• Firearms and toolmarks — review of firearms and toolmark comparisons, distance determination, and shooting reconstruction.

• Drug chemistry / controlled substances — review of controlled-substance analysis and clandestine-laboratory casework.

• Digital forensics — review of computer, mobile, and cloud evidence, data recovery, authentication, and chain-of-custody handling of digital evidence.

• Fingerprints and forensic pathology — review of latent-print work and of autopsy and death-investigation findings, with the appropriate medical and pathology expertise.

• Laboratory Accreditation & Quality Consulting — We advise laboratories and agencies pursuing or maintaining accreditation. Drawing on experience across ASCLD/LAB, ABFT, NAME, CLIA, CAP, and ISO/IEC 17025 and ISO 21043 frameworks, our consultants provide:

• Pre-inspection and accreditation preparation — readiness assessments and documentation review ahead of an accreditation visit.

• Quality assurance consulting — design and improvement of quality management systems, SOPs, and validation programs.

• Audits and corrective action — internal audits, mock assessments, and corrective-action guidance.

Training

We develop and deliver training for law enforcement agencies, attorneys, and forensic laboratories on toxicology, evidence handling, quality systems, and the reliability of forensic evidence — from single workshops to multi-session programs tailored to your team.

Expert Testimony Our consultants serve as expert witnesses for prosecution, defense, and civil counsel, and are experienced in translating complex forensic science into clear, credible testimony that a judge and jury can follow.

Speaking & Media We speak internationally on forensic toxicology, laboratory quality and accreditation, and the reliability of forensic evidence. Past engagements include keynotes and workshops for the American Academy of Forensic Sciences, the Society of Forensic Toxicologists, the World Forensic Festival, and forensic academies across four continents, along with media commentary on forensic issues.

Case Review & Second Opinions For every service above, we provide independent, plain-language findings your team and a jury can use — an outside, unbiased read on what the evidence does and does not show.