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Precision

Precision is measured by comparing duplicate results for the same sample. Precision is reported as the maximum acceptable "average relative percent difference". <we need to explain how this is calculated>

The closer results are to the detection limit, the more variation in results between duplicates is expected. We propose to use the Patuxent lab precision measures:

AVERAGE ANALYTE CONCENTRATION (multiples of detection limit) MAXIMUM ACCEPTABLE AVERAGE RELATIVE PERCENT DIFFERENCE
0-2 200%
2-10 17.3%
>10 8.6%
 

Please go to "Accuracy".

Accuracy