REVIEW ARTICLE
Year : 2011  |  Volume : 2  |  Issue : 1  |  Page : 21-25

Methods for the determination of limit of detection and limit of quantitation of the analytical methods


Department of Pharmaceutical Analysis, B. R. Nahata College of Pharmacy, Mhow Neemuch Road, Mandsaur, Madhya Pradesh - 458 001, India

Correspondence Address:
Alankar Shrivastava
Department of Pharmaceutical Analysis, BR Nahata College of Pharmacy, Mhow-Neemuch Road, Mandsaur, Madhya Pradesh 458 001
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2229-5186.79345

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The quality of an analytical method developed is always appraised in terms of suitability for its intended purpose, recovery, requirement for standardization, sensitivity, analyte stability, ease of analysis, skill subset required, time and cost in that order. It is highly imperative to establish through a systematic process that the analytical method under question is acceptable for its intended purpose. Limit of detection (LOD) and limit of quantification (LOQ) are two important performance characteristics in method validation. LOD and LOQ are terms used to describe the smallest concentration of an analyte that can be reliably measured by an analytical procedure. There has often been a lack of agreement within the clinical laboratory field as to the terminology best suited to describe this parameter. Likewise, there have been various methods for estimating it. The presented review provides information relating to the calculation of the limit of detection and limit of quantitation. Brief information about differences in various regulatory agencies about these parameters is also presented here.


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