How is LOD calculated?

How is LOD calculated?

The limit of detection (LOD) for each metabolite within a kit run is calculated from the concentrations in the zero samples based on either the standard deviation (StdDev-based) or median (Median-based).

  1. StdDev-based: LOD is calculated as median concentration of the zero samples concentrations plus three times the standard deviation of the zero samples concentrations.
LOD = median background signal + 3 × standard deviation
  1. Median-based: LOD is calculated as three times the median concentration of the zero samples.
LOD = median background signal × 3

For detailed description, please refer to the WebIDQ user manaul.

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