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See also: LoQ and loq.


Alternative forms[edit]


LOQ (plural LOQs)

  1. (chemistry, initialism) Limit of quantification (or limit of quantitation); the lowest concentration of a substance that can be accurately measured under specified experimental. conditions.
    • 2003, Paul De Bièvre & ‎Helmut Günzler, Measurement Uncertainty in Chemical Analysis, ↑ISBN, page 253:
      Therefore LOD and LOQ evaluation is only necessary for water.
    • 2004, James W. Robinson, ‎Eileen M. Skelly Frame, ‎& George M. Frame II, Undergraduate Instrumental Analysis, ↑ISBN, page 59:
      For this reason, many regulatory agencies define another limit, the limit of quantitation (LOQ), which is higher than the LOD and should have better precision.
    • 2005, Jack Cazes, Encyclopedia of Chromatography - Volume 2, ↑ISBN, page 1448:
      It is generally accepted that the LOQ is linked to method performance expectations including accuracy and precision.
    • 2016, Piotr Konieczka & ‎Jacek Namiesnik, Quality Assurance and Quality Control in the Analytical Chemical Laboratory, ↑ISBN:
      The required precision for the LOQ is determined (usually = 10%), and for this value the concentration equal to the LOQ is read on the graph.