Pharmaceutical, Biotech & GMP Manufacturing worked example

Product Hold Cost at 92% share of lots in scope: a worked example

What does the result look like when share of lots in scope reaches 92%? The full calculation is worked below with real intermediate numbers. Use it when GMP, QA, QC, validation, manufacturing, or operations teams need a quick planning estimate to quantify quarantine exposure, prioritize disposition, and explain working capital tied up by QA or QC holds.

The inputs for this scenario

  • Lots or batches on hold: 100 lots (unchanged)
  • Hold cost per lot per period: 45 $ / lot (unchanged)
  • Share of lots in scope: 92 % (raised for this scenario; the documented default is 80)
  • Fixed investigation or disposition cost: 250 $ (unchanged)

Working through the calculation

  • Applying the documented formula (Variable Product hold cost = Lots or batches on hold × Hold cost per lot × Hold scope included) to the inputs above produces each figure below.
  • At this operating point the engine returns 4,390 $ for total product hold cost, the number this scenario is built around.
  • At this operating point the engine returns 43.9 $ / piece for hold cost per lot.
  • At this operating point the engine returns 4,140 $ for variable product hold cost.
  • At this operating point the engine returns 250 $ for fixed disposition cost.

How this compares with the baseline

  • Against the tool's baseline example, where share of lots in scope sits at 80% and the headline result is 3,850 $, this scenario comes in 14.03% above the baseline at 4,390 $.
  • A figure at this level is achievable when share of lots in scope is genuinely sustained, not just peaked for a shift. The per-lot hold cost is a period snapshot; a hold that drags on for weeks compounds carrying cost, and this model does not automatically escalate cost with hold duration unless you feed in a longer-period rate.

Results at a glance

  • Total product hold cost: 4,390 $ (headline result)
  • Hold cost per lot: 43.9 $ / piece
  • Variable product hold cost: 4,140 $
  • Fixed disposition cost: 250 $

Run it with your numbers

  • Every input above is editable in the live Product Hold Cost calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.