At Marshall Toxicology, we believe in providing advanced testing solutions with fast, reliable results. Whether you’re an employer, a provider, a health care facility, a medical researcher or a patient, our experts will work around the clock to get the answers you need exactly when you need them.

With cutting-edge technology and scientific expertise, Marshall Toxicology is the trusted source for your diagnostic testing needs.

Krista L. Denning, MD
Medical Director, Toxicology Services
Professor and Chair, Department of Pathology
+ Full Bio

Kristen Bailey, MS
Managing Toxicologist

Laboratory Staff

Chelsey McPhillen
Toxicology Coordinator

Jamie Bryant
Clinical Lab Assistant

Cara Paraska
Toxicology Technologist

Jennifer Workman
Toxicology Technologist

Specimen Collection

Laura Pike
Specimen Collection

Megan Jameson
Specimen Collector

Kelsey Lewis
Specimen Collector

Jessica Preston
Specimen Collector

William Preston
Specimen Collector

Heather Ross
Specimen Collector

Natisha Tooley
Specimen Collector


For more information or to schedule a consult, please contact Marshall Toxicology at 304-781-4445.