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Related Concept Videos

Therapeutic Drug Monitoring: Drug Analysis Methods01:26

Therapeutic Drug Monitoring: Drug Analysis Methods

Therapeutic Drug Monitoring (TDM) is a clinical practice that measures specific drug levels in a patient's blood or body tissues to tailor drug therapy effectively. This monitoring is critical for managing drugs with narrow therapeutic indices like digoxin and phenytoin, ensuring they are both safe and effective. For instance, monitoring theophylline levels in asthma patients involves precision and sensitivity to adjust doses according to individual responses to therapy, ensuring efficacy and...
Drug Concentrations: Measurements01:23

Drug Concentrations: Measurements

Drug concentration is the quantity of a drug present in a biological sample. Measuring drug amounts in biological samples allows the clinician to understand how a drug is absorbed, distributed, metabolized, and excreted. Samples can be obtained through invasive or non-invasive methods. Invasive techniques involve surgical or parenteral interventions to gather blood, cerebrospinal fluid, or tissue biopsy. Conversely, non-invasive approaches provide samples like urine, feces, and saliva.
Plasma —...
Protein-Drug Binding: Determination Methods01:22

Protein-Drug Binding: Determination Methods

Determining protein-drug binding can be achieved through indirect and direct methods, each providing valuable insights into the interaction between proteins and drugs.
Indirect methods involve isolating the bound drug from its free form in biological samples such as blood, serum, or plasma. These techniques aim to measure the percentage of drugs bound to proteins. Equilibrium dialysis is a commonly used method where the free drug concentration at equilibrium is measured by separating the bound...
Methods for Studying Drug Absorption: In situ01:09

Methods for Studying Drug Absorption: In situ

In situ experiments, such as the Doluisio method and Single-Pass Perfusion technique, provide critical insights into drug uptake by simulating in vivo conditions for drug absorption.
The Doluisio method involves perfusing a prepared segment of a rat's small intestine with a solution of radiolabeled drug and a non-absorbable marker. This helps to differentiate between absorbed and non-absorbed drug concentrations. The intestinal segment is connected at both ends using tubing and syringes,...
Methods for Studying Drug Absorption: In vitro01:16

Methods for Studying Drug Absorption: In vitro

In vitro experiments are crucial for understanding the transport and absorption of drugs through biological materials. These studies employ varied methods such as the diffusion cell method, the everted sac technique, and the everted ring technique.
The diffusion cell method uses a two-compartment cell, including a donor compartment with the drug solution, which simulates the environment where the drug is applied, and a receptor compartment with a buffer solution, which simulates the environment...
Capillary Electrophoresis: Applications01:30

Capillary Electrophoresis: Applications

Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...

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Related Experiment Video

Updated: May 30, 2026

High-throughput and Comprehensive Drug Surveillance Using Multisegment Injection-Capillary Electrophoresis-Mass Spectrometry
10:17

High-throughput and Comprehensive Drug Surveillance Using Multisegment Injection-Capillary Electrophoresis-Mass Spectrometry

Published on: April 23, 2019

Capillary methods for drug analysis.

Ans Hendrickx1, Debby Mangelings, Yvan Vander Heyden

  • 1Vrije Universiteit Brussel (VUB), Center for Pharmaceutical Research, Analytical Chemistry and Pharmaceutical Technology, Brussels, Belgium.

Journal of AOAC International
|July 30, 2011
PubMed
Summary
This summary is machine-generated.

This review explores capillary-based separation techniques for analyzing drug impurities, formulations, biological samples, and chiral compounds. It highlights the versatility and potential of these methods with practical examples and details on operational parameters.

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Area of Science:

  • Analytical Chemistry
  • Separation Science

Background:

  • Capillary-based separation techniques are crucial for analyzing complex mixtures.
  • Traditional methods face challenges in sensitivity and efficiency for certain applications.

Purpose of the Study:

  • To review the applicability of capillary electrophoresis, capillary liquid chromatography, and capillary electrochromatography.
  • To illustrate the potential of these techniques through examples in drug analysis, biological samples, and chiral separations.

Main Methods:

  • Review of capillary electrophoresis (CE).
  • Review of capillary liquid chromatography (LC).
  • Review of capillary electrochromatography (CEC).

Main Results:

  • Demonstrated applicability of capillary techniques for drug impurity mixtures.
  • Showcased utility in analyzing pharmaceutical formulations and biological samples.
  • Highlighted effectiveness in chiral compound separation.

Conclusions:

  • Capillary separation techniques offer versatile and powerful analytical solutions.
  • Detailed insights into capillary dimensions, chiral selectors, and phases enhance method development.