Webinar - Marijuana in Hair & Fingernail

Joe Jones, Senior Vice President, MS, NRCC-TC, discussed marijuana usage trends and his findings on THCA in hair and fingernails and then compared and contrasted the differences in the two specimens.


Joseph Jones

Senior Vice President, MS, NRCC-TC

Joseph Jones is the vice president laboratory operations for USDTL with more than 25 years of experience in the forensic toxicology industry. Jones has provided expert testimony in a variety of venues throughout the country and appears as an author on over a dozen peer-reviewed scientific articles.

 Watch the complete webinar below.


Click here to view the research.


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