Turnaround time as a strategic metric: moving beyond the SLA

Beyond Compliance

Most laboratories manage turnaround time as a compliance metric. They measure it because accreditation requires it. They report it because contracts demand it. But they rarely use it as a strategic lever for performance improvement, revenue growth, and competitive differentiation.

The organizations that treat TAT as a strategic metric, connecting laboratory performance to clinical outcomes, referral behavior, and operational efficiency, consistently outperform their peers on both financial and clinical measures.

The Strategic TAT Framework

Mean TAT is a poor indicator of laboratory performance. It masks the variability that clinicians actually experience. The p95 (95th percentile) TAT is the metric that matters, because it represents the worst-case experience that drives clinical decision-making and referral behavior.

A laboratory with a mean TAT of 4 hours but a p95 of 18 hours delivers an inconsistent experience that erodes clinician confidence. A laboratory with a mean of 5 hours but a p95 of 7 hours delivers reliability that builds trust and retains referrals.

Research across multiple diagnostic networks demonstrates that a 1-hour improvement in p95 TAT correlates with a measurable improvement in referral retention, with sensitivity varying by test category and clinical urgency.

From Measurement to Action

LTS Global's TAT Optimizer, part of the LabOpsAI suite, provides laboratories with the analytical capability to decompose TAT performance into its component phases, identify the specific bottlenecks driving tail-end delays, and model the impact of targeted interventions before implementation.

The tool connects TAT performance to financial outcomes, enabling laboratory leaders to build investment cases grounded in revenue impact rather than operational metrics alone. This reframes TAT improvement from a cost center activity to a revenue-generating strategic initiative.