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Related Concept Videos

Data Validation01:15

Data Validation

Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
Key parameters for method validation include:
Data Validation01:03

Data Validation

Data validation is an essential part of a comprehensive assessment. Validation is confirming or verifying and opening the door to gathering more assessment data as it clarifies vague or unclear data. The process of checking and verifying the collected information is called data validation. The primary purpose of data validation is to ensure data is as free from error, bias, and misinterpretation as possible.
Nursing assessment guides are generally based on holistic models rather than medical...
Development of Analytical Methods01:21

Development of Analytical Methods

An analytical methodology can be divided into four sequential steps: technique, method, procedure, and protocol. A technique is a scientific principle that rationalizes a specific phenomenon through chemical measurements. Adapting a technique for analyzing a sample of interest is termed a method. The procedure outlines the directions for performing the analysis via an analytical method. The protocol is the detailed guidelines on the procedure, which should be strictly followed to obtain the...
Calibration Curves: Linear Least Squares01:20

Calibration Curves: Linear Least Squares

A calibration curve is a plot of the instrument's response against a series of known concentrations of a substance. This curve is used to set the instrument response levels, using the substance and its concentrations as standards. Alternatively, or additionally, an equation is fitted to the calibration curve plot and subsequently used to calculate the unknown concentrations of other samples reliably.
For data that follow a straight line, the standard method for fitting is the linear...
Instrument Calibration01:12

Instrument Calibration

Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
Quality Assurance01:19

Quality Assurance

Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be classified into three categories: quality control, quality assessment, and internal corrective measures. Typically, these activities work cyclically: quality control is performed before and during the analysis, while quality assessment occurs during and after the investigation. Internal corrective measures are implemented based on the findings...

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Updated: Jun 28, 2026

Linearization of the Bradford Protein Assay
06:35

Linearization of the Bradford Protein Assay

Published on: April 12, 2010

Key aspects of analytical method validation and linearity evaluation.

Pedro Araujo1

  • 1National Institute of Nutrition and Seafood Research, PO Box 2029, Nordnes, N-5817 Bergen, Norway. pedro.araujo@nifes.no

Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
|October 22, 2008
PubMed
Summary
This summary is machine-generated.

This study clarifies key analytical chemistry method validation parameters, such as selectivity and limit of quantitation, to prevent misuse and ensure accurate scientific conclusions in publications.

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Selected Reaction Monitoring Mass Spectrometry for Absolute Protein Quantification
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Last Updated: Jun 28, 2026

Linearization of the Bradford Protein Assay
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Published on: April 12, 2010

Selected Reaction Monitoring Mass Spectrometry for Absolute Protein Quantification
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Selected Reaction Monitoring Mass Spectrometry for Absolute Protein Quantification

Published on: August 17, 2015

Area of Science:

  • Analytical Chemistry
  • Method Validation

Background:

  • Method validation is a critical aspect of analytical chemistry, with numerous publications annually.
  • Incorrect usage and miscalculation of performance indicators are common due to limited references and flawed statistical methods.

Purpose of the Study:

  • To critically discuss and clarify definitions of key performance indicators in method validation.
  • To prevent erroneous usage and ensure scientific correctness and consistency in analytical chemistry publications.

Main Methods:

  • Critical review and discussion of established performance indicators.
  • Analysis of common misinterpretations and miscalculations in method validation.

Main Results:

  • Identified common errors in the application and understanding of terms like selectivity, accuracy, precision, and limit of quantitation.
  • Highlighted the ambiguity arising from interchangeable and incorrect use of these terms.

Conclusions:

  • Accurate understanding and consistent application of method validation parameters are essential for reliable scientific findings.
  • Clear definitions and correct statistical approaches are crucial for preventing misinterpretation in analytical chemistry.