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Spike recovery subtracts an undiluted baseline from a diluted sample · case 03

Spike recovery subtracts an undiluted baseline from a diluted sample.

Member previewVariant 3 · 3 implementations · 6 checks per implementation

Case contract

Return exact percent recovery: 100*(measured*(sample_volume+spike_volume)-baseline*sample_volume)/(spike_concentration*spike_volume). Positive volumes and spike concentration; all values integers.

Why this case matters

A deterministic synthetic laboratory reporting model isolates a software metadata contract; it is not a clinical procedure.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
complete recovery with added volume	`"100/3"`	`"100"`	Failed

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