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Related Concept Videos

Data Validation01:15

Data Validation

183
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:
183
Development of Analytical Methods01:21

Development of Analytical Methods

462
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...
462
Quality Assurance01:19

Quality Assurance

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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...
155
Quality Control01:05

Quality Control

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Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control activities include creating quality control charts, conducting proficiency testing, and documenting and archiving results.
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
194
Qualitative Analysis01:10

Qualitative Analysis

297
Qualitative analysis is the process of identifying elements, ions, or compounds in an unknown sample. It is the first and most fundamental type of analysis based on the hierarchy of analytical goals. This hierarchy is significant as it provides a structured approach to scientific research, with qualitative analysis serving as the initial step, providing essential information before moving on to quantitative or other forms of analysis.
There are two main approaches to qualitative analysis:...
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Sample Preparation for Analysis: Overview01:21

Sample Preparation for Analysis: Overview

256
Sample preparation is an essential step in the analytical process. It involves preparing a sample so that it can be analyzed accurately. The goal is to extract the analyte, the substance you want to measure, from the sample while removing any components that may interfere with the analysis. Sample preparation techniques vary depending on the physical state of the sample.
Bulk or large solid samples are typically reduced in size using grinding, crushing, or milling techniques to increase the...
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Related Experiment Video

Updated: Jul 17, 2025

Untargeted Metabolomics from Biological Sources Using Ultraperformance Liquid Chromatography-High Resolution Mass Spectrometry UPLC-HRMS
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Drilling into "Quality by Design" Approach for Analytical Methods.

Lucas Chiarentin1,2,3, Carla Gonçalves2, Cátia Augusto2

  • 1Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal.

Critical Reviews in Analytical Chemistry
|September 4, 2023
PubMed
Summary
This summary is machine-generated.

Analytical Quality by Design (AQbD) ensures consistent, robust analytical data in pharmaceutical development. This systematic approach proactively reduces method failures, enhancing efficiency and regulatory flexibility.

Keywords:
Analytical methodsanalytical methodologiesanalytical quality by design (AQbD)risk assessment

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Area of Science:

  • Pharmaceutical Analysis
  • Analytical Chemistry
  • Quality by Design

Background:

  • Pharmaceutical development relies heavily on consistent, robust analytical data.
  • Analytical Quality by Design (AQbD) enhances method quality and confidence, mirroring product Quality by Design (QbD).

Purpose of the Study:

  • To review the elements of the AQbD framework.
  • To provide an overview of AQbD implementation in pharmaceutical analytical methods.
  • To critically appraise regulatory encouragement of AQbD.

Main Methods:

  • Defining the analytical target profile.
  • Identifying critical method variables and attributes.
  • Utilizing risk assessment and Design of Experiments (DoE).
  • Establishing a method operable design region (MODR) and control strategy.

Main Results:

  • AQbD enables a systematic, proactive approach to method development, moving from reactive troubleshooting to proactive failure reduction.
  • AQbD principles are being implemented across various analytical techniques like HPLC, UV-Vis, CE, SFC, and HPTLC.
  • Regulatory bodies encourage AQbD for preventing method failures and improving understanding of MODR and control strategies.

Conclusions:

  • AQbD implementation leads to enhanced method reliability and reduced failures in pharmaceutical analysis.
  • The systematic application of AQbD principles fosters cost-effectiveness and regulatory flexibility.
  • AQbD promotes a deeper understanding of analytical methods, leading to improved quality and efficiency.