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Windows of Detection

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Welcome to the Quest Diagnostics “topics in drug testing” podcast. Today’s episode is with Quest Diagnostics senior medical advisor, Dr Jeff Gudin, and Dr Jack Kain, director and medical science liaison for the Quest Drug Monitoring and Toxicology business.

Objectives for the podcast include:

  • Understand drug metabolism and how prescription and illicit drugs and their metabolites are eliminated from the body
  • Learn about drug half-life and windows of detection, and how they are related
  • Gain a deeper understanding of specific variables that can impact a drug's window of detection


Date: Thursday, August 4, 2022


  • Jeff Gudin, MD, Senior Medical Advisor, Drug Monitoring and Toxicology, Quest Diagnostics
  • Kain J, PharmD, Director, Medical Science Liasion, Quest Diagnostics


To listen to other podcasts in our Topics in Drug Testing series or learn more about the comprehensive drug testing offering from Quest Diagnostics, please visit There you will find our Drug Monitoring Test Directory, as well as educational resources and insights from our team of toxicology experts. At Quest Diagnostics, we are committed to providing you results and insights to support your clinical decisions.