Drugs, DUI, DUID and Trace Evidence

Expert Chemistry Consultation

Preliminary Review

The preliminary review is typically a one-hour review of breath or blood analysis.

The review includes follow-up discussion with counsel, and when requested, a written review of the findings and expert opinion on the case.

Services Offered

Consultation

For more complicated and/or lengthy cases a 10-hour review (financed through a court order or retainer) is needed.

The review includes the defendant’s certificate of analysis, relevant body cam video(s), police report(s), chain-of-custody, pharmacokinetics research, etc as well as follow-up discussion with counsel and more, if needed.

Testimony

The consultant can provide testimony when needed. Travel hours and lodging are an additional expense to the consulting agreement.

Get in touch.

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contact my office.

The Consultant

Chad Snyder, PhD

Forensic Chemist
Professor of Chemistry,
Director of Forensic Science
Author
Advanced Chemistry textbook
Physics textbook
Forensic Chemistry lab manual
Content Editor
Forensic Science textbook
Physical Science textbook
Expert Witness

See my CV
Chad Snyder Linkedin
Education

Ph.D. Organometallic Chemistry,
University of Kentucky, KY 2005
M.S. Analytical Chemistry,
Western Kentucky University, KY 1999
B.S. Chemistry,
Kentucky Wesleyan College, KY 1997

A.S. Owensboro Community College, KY 1995
Expert Consultation History (recent)

•Commonwealth of South Dekota v. Defendant, Minnehaha County, Emily Herbert and Traci Smith, VA. Public Defender Office, SD. 2026
·Commonwealth of Virginia v. Defendant, Prince William County, Genevieve Miller, VA. Public Defender Office, VA. 2026
·Commonwealth of Virginia v. Defendant, Arlington County, VA. Allison Carpenter, Public Defender Office, VA. 2026
·Commonwealth of Virginia v. Defendant (Expert Testimony Provided), Arlington County, VA. Alexandra Mannix, Irving Law Firm, VA. 2026
·Commonwealth of Virginia v. Defendant (Expert Testimony Provided), Hanover County, VA. J. Daniel Vinson, Riley & Wells Attorneys at Law, Richmond, VA. 2026
·Commonwealth of Virginia v. Defendant (Expert Testimony Provided), Manassas, VA. Alexandra Mannix, Irving Law Firm, VA. 2026
·Commonwealth of Virginia v. Defendant, Fluvanna County, VA. Rhonda Quagliana, MichieHamlett Trial Attorneys, Charlottesville, VA. 2026
·State of Nevada v. De Groot, Clark County, NV. Clark Hill PLC, NV. 2026
·State of Nevada v. Caci, Clark County, NV. Clark Hill PLC, NV. 2026
·State of Nevada v. McClave, Clark County, NV. Clark Hill PLC, NV. 2026
Southern District Court of New York, CJA, Joshua J. Horowitz, Esq., Horowitz Tech Law P.C., Garden City, New York, 2026
State of W. Virginia v. Defendant, Ohio County, 2025
• United States of America v. Defendant, Western District of North Carolina, 2025
• State of Nevada v. Defendant, Clark County, NV. Clark Hill PLC, NV. 2024
• State of Nevada v. Defendant, Clark County, VA. Clark Hill PLC, NV. 2024
• Commonwealth of Virginia v. Defendant, Russell County, VA. Public Defender Office, VA. 2024
• Commonwealth of Virginia v. Defendant, Prince William County, VA. Public Defender Office, VA. 2024 Trial this December.
• Commonwealth of Virginia v. Johnson, Fairfax County, VA. Public Defender Office, VA. 2023
• Commonwealth of Virginia v. Corrigan-Cummins, Isle of Wight County, VA. The Law Office of McKeen, PLLC, Hayes, VA
Work Experience

Professor, Liberty University, Department of Biology & Chemistry, Lynchburg, VA, 2019-current
Full Professor, Dept. of Science & Mathematics, Grace College, IN, 2015-2019
Associate Professor, Dept. of Chemistry,
Western Kentucky University, KY, 2012-2015
Assistant Professor, Dept. of Chemistry,
Western Kentucky University, KY, 2006-2012
Professional Organizations

• American Academy of Forensic Science,
Associate Member, Criminalistics, 2025–current
• National Association of Criminal Defense Lawyers, Associate Member, 2024–current
• The Chartered Society of Forensic Sciences,
Affiliate member, 2022-current
• American Chemical Society Member, 1998–current
• Virginia Academy of Sciences Member,
2022–current
Recent Forensic Chemistry Seminars

•UNODC (United Nations Office on Drugs and Crime): New Psychoactive Substances, A Global Update After 10 Years of International Scheduling. The Center for Forensic Science Research & Education, Online Forensic Symposium, 2024
•The Busy Lawyer’s Guide to Evidence in Drugs and Guns Cases, National Association of Criminal Defense Lawyers, 2024
•Choosing the right LC-MS platform for NPS screening, SCIEX, P. Negri, Forensics, 2024
•Fentanyl, Opioid, and Polydrug Deaths in Infants and Children , 2024 SCIEEX