USDTL Webinar on Marijuana in Hair and Fingernails

Joseph Jones, USDTL Vice President Laboratory Operations, MS. NRCC-TC speaks on marijuana detection in hair and fingernails and compares and contrasts the two specimens.

USDTL is a business-to-business laboratory that is a leader in newborn toxicology, alcohol biomarkers, and substances of abuse testing for all stages of life. We are on a mission to ensure the hardest cases do not go without resolution by specializing in niche areas of forensic drug and alcohol testing.

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0:00 Introduction
1:09 Conflict of Interest Employees of USDTL
1:42 Objectives
2:25 Trends of Marijuana Use
8:07 Detection Windows
12:16 How are drugs implemented into hair?
15:36 Specimen Type: Why Fingernail?
15:44 Anatomy of Fingernail
16:52 Fingernails Are Made of Keratin
17:38 Incorporation of Drug
18:18 Biomarker Absorption
20:18 THCA Validation Specs
22:48 THCA Validation Results
23:48 What is a Femtogram
26:12 Positivity Rates
28:05 Mean Concentrations
29:31 60 Matched Pairs of Hair and Nail
30:51 Limitations
31:46 Published Results
32:18 Conclusion
34:19 Q&A

Видео USDTL Webinar on Marijuana in Hair and Fingernails канала United States Drug Testing Laboratories (USDTL)