LOQ

See also: LoQ and loq.

English

Alternative forms

• LoQ

Noun

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.

Anagrams

• QoL, OQL