FDA found IBT managers guilty for 3 decades of fraud Industrial Bio-Test Laboratories (IBT) performed about 35-40% of all U.S. toxicology testing. Of the 867 audits of IBT performed by the FDA, 618 were found to be invalid b/c of numerous discrepancies. https://web.archive.org/web/20070103040804/http://www.westgard.com/guest16.htm