Urine Drug Testing: Service Models and Laboratory Practices to Meet Clinical Care Needs.

Area of Science:

• Clinical Chemistry
• Toxicology
• Laboratory Medicine

Background:

• Urine drug testing (UDT) is crucial in healthcare for identifying drug exposure and supporting patient care.
• UDT has diverse applications, including substance misuse detection, treatment monitoring, and identifying toxic substances.
• Clinical laboratories must optimize UDT service models based on care settings and patient needs.

Purpose of the Study:

• To review preanalytical, analytical, and postanalytical considerations for clinical laboratories implementing UDT.
• To highlight the importance of quality requirements at each phase of the UDT process.
• To discuss limitations of analytical methodologies and identify areas for improvement.

Main Methods:

• Comprehensive literature review of UDT implementation and quality assurance.
• Analysis of preanalytical, analytical, and postanalytical phases of UDT.
• Discussion of current gaps, opportunities, and recommendations for standardization.

Main Results:

• Accurate UDT relies on stringent quality control across specimen collection, testing, and interpretation.
• Different analytical methods have inherent limitations that impact results.
• Standardization and quality improvement are essential for reliable UDT.

Conclusions:

• Effective UDT requires careful attention to all testing phases and method-specific limitations.
• Laboratories should adapt UDT services to local clinical needs and consider new testing methods.
• Enhanced understanding of UDT complexities can improve clinical interpretation by healthcare providers.