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Related Concept Videos

Drug Dosing in Renal Diseases: Measurement of Serum Creatinine Concentration and Clearance01:25

Drug Dosing in Renal Diseases: Measurement of Serum Creatinine Concentration and Clearance

In healthy individuals, serum creatinine levels remain stable due to a balance between its constant production—primarily from muscle metabolism—and renal excretion. Creatinine is freely filtered by the glomeruli, making it a valuable marker for estimating renal function. When the glomerular filtration rate (GFR) decreases, the kidneys can only eliminate less creatinine, causing serum levels to rise.Serum creatinine concentration is widely used to estimate creatinine clearance (Clcr), a...
Drug Dosing in Renal Diseases: Measurement of Glomerular Filtration Rate01:25

Drug Dosing in Renal Diseases: Measurement of Glomerular Filtration Rate

The glomerular filtration rate (GFR) is a critical indicator of kidney health, reflecting how well the kidneys filter blood. Changes in GFR can signal potential kidney impairment, necessitating accurate measurement methods to monitor kidney function effectively.Various molecules can serve as markers for GFR measurement, with the ideal marker meeting several specific criteria. It must freely filter at the glomerulus, avoid reabsorption or secretion by the renal tubules, remain unmetabolized, not...
Drug Dosing in Renal Diseases: Estimation of Glomerular Filtration Rate Based on Serum Creatinine Concentration01:28

Drug Dosing in Renal Diseases: Estimation of Glomerular Filtration Rate Based on Serum Creatinine Concentration

Glomerular filtration rate (GFR) can be estimated from serum creatinine using the modification of diet in renal disease (MDRD) formula or the chronic kidney disease–epidemiology collaboration (CKD–EPI) equation. Both methods are widely used in clinical practice to assess kidney function and guide treatment decisions.The MDRD equation does not require weight or height measurements and is normalized to the body surface area of 1.73 m², considered the average adult surface area. This equation is...
Factors Affecting Renal Clearance: Renal Impairment01:17

Factors Affecting Renal Clearance: Renal Impairment

Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
One condition associated with renal failure is uremia. Uremia is characterized by impaired glomerular filtration and fluid accumulation in the body. This condition hinders the renal clearance of drugs, resulting in drug accumulation and potential...
Renal Drug Clearance: Comparison Between Renal Excretion Methods01:08

Renal Drug Clearance: Comparison Between Renal Excretion Methods

Renal clearance is a critical parameter encompassing kidney filtration, secretion, and reabsorption processes. It is calculated using a specific equation to determine the rate at which the kidneys clear a drug.
Renal clearance is often associated with the renal glomerular filtration rate (GFR), which represents the rate at which plasma is filtered through the glomeruli in the kidney. When drug reabsorption is minimal and there is no active secretion, renal clearance is closely related to the...
Serum Studies: Renal Function Tests01:24

Serum Studies: Renal Function Tests

Renal function tests are crucial for assessing kidney health, monitoring disease progression, and evaluating the kidneys' efficiency in waste elimination, fluid balance, and electrolyte regulation. These tests offer critical insights into kidney function, even though routine measurements may appear normal until there is a significant decline in the glomerular filtration rate or GFR. Typically, signs of kidney impairment only become evident when the GFR falls to about 50% of its normal level.

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A High-throughput Method for Measurement of Glomerular Filtration Rate in Conscious Mice
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A review on creatinine measurement techniques.

Elham Mohabbati-Kalejahi1, Vahid Azimirad, Manouchehr Bahrami

  • 1The Center of Excellence for Mechatronics, School of Engineering Emerging Technologies, University of Tabriz, Tabriz, Iran.

Talanta
|July 31, 2012
PubMed
Summary

Recent creatinine measurement techniques, including Molecular Imprinted Polymers (MIPs), offer improved stability and linear range over older methods. Biosensors integrate biology and micro-mechatronics for enhanced diagnostics.

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Area of Science:

  • Biomedical Engineering
  • Analytical Chemistry
  • Sensor Technology

Background:

  • Creatinine measurement is crucial for diagnosing kidney function.
  • Traditional methods like Elisa have limitations in stability and linear range.
  • Advancements in biosensor technology are transforming creatinine analysis.

Purpose of the Study:

  • To review global trends in creatinine measurement techniques.
  • To compare the performance of novel and conventional creatinine sensing methods.
  • To categorize and analyze various biosensor algorithms for creatinine detection.

Main Methods:

  • Survey of recent literature on creatinine biosensors.
  • Categorization of sensors into optical, electrochemical, impedometrical, ISFET, and chromatographic techniques.
  • Analysis of sensor performance metrics: response time, detection limit, linear range, and selectivity.

Main Results:

  • Molecular Imprinted Polymers (MIPs) based algorithms show superior stability and linear range compared to Elisa.
  • Potentiometric techniques offer the fastest response time (4-10 s).
  • Chromatographic techniques achieve the lowest detection limit (0.28 nmol L(-1)).
  • MIP-based and chromatographic techniques exhibit the best selectivity.

Conclusions:

  • Novel creatinine biosensors, particularly MIP-based and chromatographic methods, outperform traditional techniques.
  • The choice of technique depends on specific requirements for response time, detection limit, and selectivity.
  • Future research should focus on optimizing these advanced biosensor technologies for clinical application.