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Toxicology and Drug Testing: Collection Integrity, Chain of Custody, and Interpretation Issues
Drug testing is used in clinical, treatment, workplace, legal, and safety-related settings to help identify whether drugs, alcohol, medications, or other substances may be present in a person’s system. However, toxicology results are only meaningful when the specimen is collected correctly, handled securely, documented accurately, and interpreted within the limits of the testing method.
This course reviews the toxicology and drug testing process with emphasis on specimen collection, collection integrity, chain of custody, screening and confirmation testing, drug testing panels, cutoff levels, detection windows, interpretation limitations, documentation, reporting, confidentiality, and ethical considerations. Participants will examine how errors in collection, labeling, storage, transport, documentation, or interpretation can affect the reliability and defensibility of test results.
Course Objectives
After completion of this course, users should be able to:
- Describe the purpose and common uses of toxicology and drug testing.
- Identify common specimen types used in drug testing and explain basic strengths and limitations of each.
- Explain the importance of specimen collection integrity in producing reliable test results.
- Describe chain of custody procedures and why they are important in clinical, workplace, forensic, and legal testing situations.
- Differentiate between screening tests, presumptive results, and confirmation testing.
- Explain how drug testing panels, cutoff levels, and detection windows affect result interpretation.
- Recognize common interpretation issues, including false positives, false negatives, cross-reactivity, medication effects, specimen validity concerns, and the difference between detection and impairment.
- Describe documentation, reporting, confidentiality, and ethical responsibilities related to drug testing results.
Information
- Relevance: This course is designed for master’s level counselors and social workers, addiction professionals, nurses, clinical staff, laboratory personnel, case managers, compliance staff, and other professionals who may be involved in drug testing, toxicology result review, specimen collection, treatment monitoring, workplace testing, or documentation of testing outcomes. This course will help participants better understand the importance of collection integrity, chain of custody, accurate documentation, and careful interpretation when handling or relying on drug testing results.
- Content Level: Intermediate
- Course Format: This course is offered as a self-paced distance learning format (reading-based online activity)
- System Requirements: This course is offered online. Internet connection required.
- Course Completion Information: To earn continuing education credit, professionals must register and pay the fee for the course. They must read the content and demonstrate understanding by earning a minimum score of 70 percent on testing materials. The certificate of completion will be able to be downloaded after the above is completed. Refunds will be granted upon request with the withdrawal of credit for the course. For questions, concerns, or to request special accommodations, please call 866-863-4225 or email ContactUs@BaysideCEU.com.
- Last Updated: July 6, 2026