What are the key metrics for tracking laboratory turnaround time?

2 How to measure TAT

Measuring TAT can be done in various ways, depending on the purpose and scope of the analysis. Total TAT is the time elapsed from sample collection to result reporting, while pre-analytical TAT captures the time from when the sample is collected to when it is ready for analysis in the lab. Analytical TAT measures the amount of time from when the sample is ready to when it is validated and verified by the laboratory, and post-analytical TAT records the time from when the result is validated to when it is reported to clinicians or patients. Each of these methods can help pinpoint sources of delay or error, such as issues with sample collection or result communication.

3 How to benchmark TAT

To evaluate and improve TAT, laboratories need to compare their performance with relevant benchmarks or standards. These can be internal benchmarks, such as historical data or goals set by the laboratory itself, external benchmarks from other laboratories, professional organizations, accreditation bodies, or regulatory agencies, or customer benchmarks based on feedback and expectations from clinicians, patients, or other stakeholders. Each of these sources can provide valuable insights and perspectives on laboratory performance and improvement; however, they should be used with caution and context as they may vary depending on the type, volume, complexity, and urgency of the tests, as well as the characteristics and culture of the laboratory and its customers.

4 How to optimize TAT

TAT optimization is an ongoing process that requires a systematic and collaborative approach. To start, you should define and monitor TAT metrics and indicators using dashboards, reports, or alerts. Statistical techniques such as control charts, histograms, or Pareto charts can help you analyze and identify TAT variations and trends. Quality improvement methods like fishbone diagrams, flowcharts, or the 5 whys can be used to investigate and diagnose TAT problems and root causes. Project management methods like plan-do-check-act cycles, action plans, or audits can help you implement and evaluate TAT solutions and interventions. Finally, engaging with TAT stakeholders through feedback mechanisms like surveys, meetings, or newsletters is essential for success. By following these steps, laboratories can improve their TAT performance and efficiency as well as their value to patient care and health systems.

5 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?