Stress-test a reagent stockout by proving that each hold window and restore rule can place spare reagents inside the planned lane, survive override pressure, and avoid trapping benches inside a green stock slide that hides long-lived shortages.
Reagent stockouts often list a surge plan while leaving restore behavior, override authority, and abort ownership implicit. Those edges decide whether a late lot stop stays inside the stockout packet or leaves a broken assay path live under peak load. Follow actual reagent timelines, lot maps, and escalation paths rather than a clean fill-rate deck.
Inventory the stockout path
List every reagent class with its hold window, waive rule, override behavior, owners, and notification channels. Mark paths that cannot reverse without a manual amendment. Attach the last three reagent stockout incidents with raw timelines and any waivers. Include the source of truth for open lot counts during the observation window.
Define detect, hold, divert, abort, and restore phases. Each phase needs an owner and an exit condition. Write the point after which a stuck lot would require a different procedure, then review whether that action is still permitted. Capture maximum acceptable dwell in measurable units, including which benches are excluded from the stockout path and why.
Fold in the next two quarters of known events: seasonal assay spikes, freezer freezes, and specimen chain rewrites that shrink the usable hold window. A stockout budget that ignores those dates will look calm until the week they land.
Failure cases that must break aloud
- A minority high-volume bench keeps a side-channel while the aggregate reagent dashboard stays green.
- A restore has already left a lot surface without a trusted reagent state.
- The primary reagent dashboard lags beyond the planned observation window.
- An operator skips a hold gate because a turnaround cutoff is near.
- Automated and human divert messages collide under the new stockout rule.
- Abort authority is unclear at week end and the update lands on the wrong amendment.
For each case, identify detection time, assay impact, containment, and the authority to force a stockout rollback. Require commands and dashboard links in the runbook. A claim that monitoring will catch it does not establish which alert fires or who receives it.
Prove timing and ownership
Run the package in Pingpong with lab, inventory, quality, and finance seats. Ask lab which assay decision becomes unsafe first if holds still stick after the claimed window. Ask inventory whether lot macros can absorb a forced override. Ask owners to show the exact reagent version or export used as the exit condition.
Related reviews include a specimen chain rewrite, the lab ops lead seat, a turnaround SLA cut, and a safety stock rule. Browse the war-game decisions hub for adjacent controls.
Authorize the published reagent stockout path only after a timed drill restores usable lot hygiene inside the documented budget without an undocumented manual step.