Which practice best supports optimizing turnaround time (TAT) in a drug testing lab?

Which practice best supports optimizing turnaround time (TAT) in a drug testing lab?

• A. Defining milestones after the run completes.
• B. Defining milestones, monitoring sample flow, identifying bottlenecks, and applying automation or scheduling strategies.
• C. Increasing sample volume without process review.
• D. Relying solely on manual processes.

Answer: (B)

Optimizing turnaround time comes from proactive workflow management that keeps the sample path visible and under control. Defining milestones provides clear checkpoints along the process so you know where a sample is at any moment. Monitoring how samples move through the lab reveals the flow and where delays begin to accumulate. Spotting bottlenecks tells you exactly where capacity is constrained, whether it’s a instrument, a person, or a step in the protocol. Then applying automation or scheduling strategies addresses those constraints—like automating repetitive steps, integrating the LIMS to streamline handoffs, or staggered scheduling to balance instrument load—so resources are used efficiently and idle time is minimized. Turnaround time is improved by acting on the workflow in real time, not after the run is finished or by simply increasing volume without changing the process, and not by relying only on manual steps which tend to slow things down.