Limit of quantification definition

Limit of quantification or “LOQ” means the minimum levels, concentrations, or quantities of a target variable, for example, an analyte that can be reported by a laboratory with a specified degree of confidence.

Limit of quantification means a concentration of an analyte at which one can state with a degree of confidence, using the most sensitive analytical test method approved by EPA, for that sample matrix that an analyte is present at a specific concentration in the sample tested.

Limit of quantification means a stated multiple of the limit of detection at a concentration of the determinand that can reasonably be determined with an acceptable level of accuracy and precision. The limit of quantification can be calculated using an appropriate standard or sample, and may be obtained from the lowest calibration point on the calibration curve, excluding the blank;

Examples of Limit of quantification in a sentence

• Limit of quantification is calculated from signal to noise ratio.

• Limit of quantification (LOQ) was estimated based on a 10:1 signal-to-noise ratio.

• Limit of detection and Limit of quantification, Method precision, Linearity, Accuracy, Intermediate precision/Ruggedness, and batch analysis.

• Limit of quantification can be calculated using following equation as per ICH guidelines.

• Limit of quantification: 0.0018 mg as /m3High Performance Liquid Chromatography using UV detection for the analysis of thiacloprid residues in drinking and surface water.

• Table 3.8 Limit of quantification values assessed ConcentrationMean peak areaStandard deviation% RSD(μg/ml)(n = 3) 0.50752584.678.500.330.40602048.676.350.310.30451537.3311.680.760.20301007.334.160.410.1015502.3329.875.95 The LOQ was found to be 0.2 μg/ml which had a percent RSD value of 0.41% and therefore by convention the LOD value is taken to be 0.06 μg/ml.

• Limit of quantification (LOQ): 0.05 µg/l Relevant when an active substance is classified as toxic or highly toxic.

• USP describes eight steps for endorsement.Accuracy, Precision, Specificity, Limit of Detection, Limit of quantification, Linearity and range, Ruggedness, Robustness The Analytical method validations criteria were defined based on the purpose of their use.

• Limit of quantification was 0.003 ng/L for both atrazine and desethylatrazine.

• Limit of quantification (LOQ) for sulfur determination using the developed EDXRF method was also evaluated from the standard deviation of the calibration curve and it was found to be below 10 mg kg-1.

More Definitions of Limit of quantification

Limit of quantification. (LOQ): means the lowest level achieved and reported by routine monitoring with validated methods in accredited laboratories as defined in Regulation (EC) No XXX/2003;

Limit of quantification. LOQ’)’ means the lowest content of the analyte which can be measured with reasonable statistical certainty, i.e. the lowest concentration or mass of the analyte that has been validated with acceptable accuracy by applying the complete analytical method and identification criteria;

Limit of quantification means a stated multiple of the limit of detection at a concentration of the determinand that can reasonably be determined with an acceptable level of accuracy and precision;

Limit of quantification or “LOQ” means the minimum levels, concentrations, or quantities of a target