TCAS
Toxicology Consultants & Assessment Specialists, LLC

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Drugs of Abuse   Toxic Substances: Drugs of Abuse
Drugs of abuse are well-documented in the peer-reviewed toxicological literature. a TCAS has provided toxicological guidance, written assessments and expert testimony in hundreds of drug-related cases. Virtually all drugs of abuse are well-documented in the peer-reviewed toxicological literature with clearly-established endpoints. However, drugs of... (more)

Toxicology of Pharmaceuticals   Toxic Substances: Toxicology of Pharmaceuticals
TCAS has broad experience with pharmaceutical toxicology. a TCAS has wide experience with pharmaceutical toxicology and has performed many assessments involving prescription medications, drugs of abuse, vaccines and over-the-counter preparations. Although pharmaceutical use can be a significant toxicological factor in a variety of claims, the real... (more)

Window Washer's Deadly Fall Due to Heroin Abuse?   Case Studies in Toxicology: Window Washer's Deadly Fall Due to Heroin Abuse?
This case study summarizes a matter in which a window worker was killed while on the job, resulting in the filing of a lawsuit for negligence. It illustrates how toxicological interpretation of historical factors and application of peer-reviewed human studies can play a pivotal role in litigation. A window washer suddenly and unexpectedly fell to his... (more)

Fatal Accident Caused by Long-Term Drug Use?   Case Studies in Toxicology: Fatal Accident Caused by Long-Term Drug Use?
This toxicological case study illustrates the methods and means by which presumed causation can be refuted through interpretation of objective scientific evidence. It summarizes the events following the death of an elderly man involved in a motor vehicle accident and demonstrates how pharmacological factors and behavior on the part of the defendant... (more)

Professional Experience and Toxicological Specializations   Professional Experience and Toxicological Specializations
TCAS has assessed hundreds of different types of toxic substances and exposure effects. [a] TCAS provides professional, comprehensive forensic and environmental exposure analysis, risk assessments and causation determinations. With more than 28 years of hands-on experience, our cases cover a vast range of toxic exposure-related issues combining toxicological... (more)

Dr. William R. Sawyer, Toxicologist   Home: Dr. William R. Sawyer, Toxicologist
Ph.D., Diplomate, American Board of Forensic Medicine D-ABFM Dr. William R. Sawyer is an expert forensic toxicologist For more than 28 years expert toxicologist Dr. William R. Sawyer has been providing forensic toxicology consulting services and expert testimony. A diplomate of the American Board of Forensic Medicine, Dr. Sawyer has extensive experience... (more)

Site Map   Site Map
Toxicology Consultants and Assessment Specialists, LLC TCAS has devoted its website to the role of the expert toxicologist and the science of toxicology. The following pages present both original and edited public-domain information compiled as a useful educational resource. This site map is a content reference intended to assist with rapid location... (more)

A Message from Dr. William R. Sawyer
Chief Toxicologist, TCAS, LLC

A message from Dr. William R. Sawyer, Expert Toxicologist

"Assessing the direct and indirect impacts of drugs of abuse requires close attention to detail. Adhering to generally-accepted, peer-reviewed methods and the results of human studies are the best ways to ensure credible results that will stand up to scientific scrutiny."

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This is an informational and instructional website devoted to toxicology. It presents both original and edited public-domain content compiled as a useful educational resource. References and footnotes have been included wherever possible and image sources have been cited where appropriate. Although most pages can be printed or downloaded as PDF files (and we encourage you to make constructive use of our information), this website is copyrighted and material may only be reproduced and/or distributed with prior permission from TCAS, LLC.