In the context of precision assessment on automation platforms, which statement best distinguishes intra-assay and inter-assay precision?

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Multiple Choice

In the context of precision assessment on automation platforms, which statement best distinguishes intra-assay and inter-assay precision?

On automation platforms, precision is split into repeatability and reproducibility. Repeatability, or intra-assay precision, looks at how tightly results cluster when the same sample is measured multiple times within a single run under the same conditions. Reproducibility, or inter-assay precision, examines how results vary when the assay is performed across different runs, often on different days, which introduces day-to-day and instrument/reagent differences. This is why the best statement is that intra-assay is repeatability within a run and inter-assay is variability between runs/days. The other options mix up the concepts or confuse precision with accuracy.

On automation platforms, precision is split into repeatability and reproducibility. Repeatability, or intra-assay precision, looks at how tightly results cluster when the same sample is measured multiple times within a single run under the same conditions. Reproducibility, or inter-assay precision, examines how results vary when the assay is performed across different runs, often on different days, which introduces day-to-day and instrument/reagent differences. This is why the best statement is that intra-assay is repeatability within a run and inter-assay is variability between runs/days. The other options mix up the concepts or confuse precision with accuracy.

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