Doug Crook

After obtaining a BS degree in microbiology from the University of Texas at Arlington, I began an 18-year career in toxicology with a company that would eventually become Quest Diagnostics.

In 1997, I came over to PharmChem as a technical analyst and account manager. Today, I serve as the operations & toxicology manager, providing support and technical assistance to our valued customers for PharmChek® Sweat Patch results.

I have many years of experience working with a wide variety of instrumentation, including HPLC, GC, GC/MS, atomic absorption spectroscopy, immunoassay instrumentation for drugs of abuse testing, and numerous other techniques in both clinical toxicology and forensic drugs of abuse testing. I've also worked as a certifying scientist, and I have testified in several probation hearings.

My wife and I live in Texas, and I enjoy spending time with my kids and grandchildren.