Sterilization & Sterile Barrier Manufacturing worked example

Field Complaint Reserve at 0.46% expected complaint rate: a worked example in sterilization & sterile barrier manufacturing

What does the result look like when expected complaint rate reaches 0.46%? The full calculation is worked below with real intermediate numbers. A quality finance lead uses this to set a complaint reserve when forecasting product P&L for a sterile device line.

The inputs for this scenario

  • Units shipped: 50,000 units (unchanged)
  • Cost per complaint event: 38 $/unit (unchanged)
  • Expected complaint rate: 0.46 % (raised for this scenario; the documented default is 0.4)
  • CAPA program overhead: 15,000 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Total reserve = units shipped x cost per complaint x expected complaint rate % + CAPA overhead) to the inputs above produces each figure below.
  • At this operating point the engine returns 23,740 $ for total field complaint reserve cost, the number this scenario is built around.
  • At this operating point the engine returns 0.47 $ / piece for field complaint reserve cost per unit.
  • At this operating point the engine returns 8,740 $ for variable field complaint reserve cost.
  • At this operating point the engine returns 15,000 $ for fixed field complaint reserve adder.

How this compares with the baseline

  • Against the tool's baseline example, where expected complaint rate sits at 0.4% and the headline result is 22,600 $, this scenario comes in 5.04% above the baseline at 23,740 $.
  • A figure at this level is achievable when expected complaint rate is genuinely sustained, not just peaked for a shift. It assumes a stable expected complaint rate; a systemic seal or sterilization failure produces a complaint cluster far above the modeled rate, so the reserve covers routine background complaints, not a recall.

Results at a glance

  • Total field complaint reserve cost: 23,740 $ (headline result)
  • Field complaint reserve cost per unit: 0.47 $ / piece
  • Variable field complaint reserve cost: 8,740 $
  • Fixed field complaint reserve adder: 15,000 $

Run it with your numbers

  • Every input above is editable in the live Field Complaint Reserve calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.