Temperature excursion response checklist
Contain, characterise, assess, decide, learn — the steps and records an excursion deviation needs.
16 items · Based on EU GDP chapters 3 and 9, WHO TRS 961 Annex 9, ICH Q1A(R2) (MKT)
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Immediately
Characterise
Assess and decide
Close and learn
General technical guidance written against the cited sources. Adapt it to your procedures; it is not a substitute for the applicable standard or a qualified reviewer's judgement.
Background reading
Handling temperature excursions in storage and distribution
An excursion is assessed against the product's stability data, not averaged away. Six hours at 12 °C in a 40-day cold-chain profile moves MKT by 0.08 °C.
Mean kinetic temperature (MKT): what it is and when to use it
MKT is not an average. It is the single temperature that would do the same cumulative chemical damage, which is why it sits above the arithmetic mean.
Deviations and CAPA for environmental control failures
An excursion, a failed calibration or a failed mapping is a deviation. Classify it, investigate the root cause proportionately, and close it with action.
Alarm limits vs acceptance limits: setting them correctly
Acceptance limits come from the product; alarm limits sit inside them to give time to act, alert limits inside those. Uncertainty and delay set the gaps.