SAN ANTONIO, TX--(Marketwire - June 18, 2009) - Harvey MacFenerstein, M.D., a medical toxicologist and president of Analytical Toxicology Corp., released the following statement related to questions raised about an affidavit in the case of NASCAR driver Jeremy Mayfield.

Thank you for this opportunity to clear up the facts regarding my background. As the founder and president of Analytical Toxicology Corp. and a person who is intimately familiar with standards and practices related to drug testing, I was asked to give my expert opinion on lab results. I examined the facts and offered my best and honest opinion. I was not compensated in any way for my services.

Before signing an affidavit, I noticed inaccuracies regarding my background and corrected them. Unfortunately, the revisions I made were not reflected in the affidavit that was filed.

This error has hurt me and damaged my reputation. I am proud of my educational and professional background and I wish to correct the record. Below is a complete and accurate account of my educational and professional background.


I earned my Medical Degree in 1982 from Universidad Centro de Estudios Tecnologicos, more commonly called Universidad C.E.T.E.C. in the Dominican Republic. I studied there from 1980 to 1982 after transferring from Universidad Del Noreste in Tampico, Tamaulipas, Mexico, where I studied from 1978 to 1980.


Since 1996 I have owned and operated Analytical Toxicology Corp., a full-service drug testing lab in San Antonio, Texas. We are the only lab in South Texas that uses Gas Chromatography/Mass Spectrometry (GC/MS), which is considered a gold standard for forensic substance identification. We are also the only lab in the region to use the state-of-the-art High Performance Liquid Chromatography Mass Spectrometry (HPLC/MS) analysis platform.

I am an active member of the American Academy of Clinical Toxicology and the American Chemical Society.

To provide the highest degree of quality assurance to our clients, the College of American Pathology tests our lab every 90 days. I am proud that we have been in operation for more than 10 years without incident.

I have devoted my career to achieving the highest standards of professionalism and accuracy. It is heartbreaking that my reputation and credibility have been tainted due to these accusations. I am proud of my educational and professional accomplishments and played no role in the distortions of my background.

Contact Information: Contact: Dan Keeney, APR DPK Public Relations 214-432-7556