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Related Concept Videos

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...
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: 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...
Renal Clearance01:23

Renal Clearance

The glomerular filtration rate (GFR) is a critical marker of kidney function, reflecting the efficiency of filtration by the glomeruli. Renal clearance of specific substances, such as inulin or creatinine, is commonly used to measure GFR.
Renal clearance refers to the volume of plasma cleared of a specific substance, such as creatinine, per unit of time. To measure clearance, urine samples are collected over a 24-hour period during each bladder voiding, followed by a single blood sample at the...
Renal Drug Excretion: Glomerular Filtration01:02

Renal Drug Excretion: Glomerular Filtration

The kidney serves as the primary organ responsible for eliminating drugs and their metabolites from the body. This process, known as renal elimination, starts with glomerular filtration and results in urine formation. Each kidney houses millions of functional units called nephrons, where urine production occurs. A nephron has two main components: a renal corpuscle and a renal tubule.
Drugs gain access to the kidney via the renal artery, which progressively branches off into afferent arterioles.
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...

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Related Experiment Video

Updated: Jul 4, 2026

A High-throughput Method for Measurement of Glomerular Filtration Rate in Conscious Mice
07:07

A High-throughput Method for Measurement of Glomerular Filtration Rate in Conscious Mice

Published on: May 10, 2013

[Tables estimating glomerular filtration rate from plasma creatinine].

C Canal1, R Pellicer, C I Rocha

  • 1Servicio de Nefrología, Fundación Puigvert, Universidad Autónoma de Barcelona FP/UAB, Barcelona.

Nefrologia : Publicacion Oficial De La Sociedad Espanola Nefrologia
|July 2, 2008
PubMed
Summary

Early diagnosis of chronic kidney disease (CKD) is crucial. This study provides tables to easily estimate glomerular filtration rate (GFR) from serum creatinine, aiding timely medical intervention and improving patient outcomes.

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Last Updated: Jul 4, 2026

A High-throughput Method for Measurement of Glomerular Filtration Rate in Conscious Mice
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Published on: May 10, 2013

Physiology Lab Demonstration: Glomerular Filtration Rate in a Rat
06:58

Physiology Lab Demonstration: Glomerular Filtration Rate in a Rat

Published on: July 26, 2015

Transdermal Measurement of Glomerular Filtration Rate in Mice
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Area of Science:

  • Nephrology
  • Clinical Chemistry
  • Public Health

Context:

  • Chronic kidney disease (CKD) poses significant health and economic burdens.
  • Early CKD detection is vital to prevent severe complications and cardiovascular risks.
  • Current diagnostic methods rely on estimated glomerular filtration rate (eGFR) calculations, often not automated by laboratories.

Purpose:

  • To develop user-friendly tables for estimating GFR from serum creatinine.
  • To facilitate early CKD diagnosis by providing creatinine values for various GFR levels, ages, and sexes.
  • To promote awareness of creatinine assay standardization and its impact on GFR estimation.

Summary:

  • This study presents tables correlating serum creatinine levels with estimated GFR (eGFR) using both MDRD-4 and MDRD-IDMS equations.
  • A comprehensive table using the recommended MDRD-IDMS formula is provided for laboratories with standardized creatinine assays.
  • These tools aim to simplify the conversion of serum creatinine to eGFR, supporting clinical decision-making.

Impact:

  • Facilitates earlier and more accurate diagnosis of chronic kidney disease.
  • Supports timely implementation of medical interventions to manage CKD and associated cardiovascular risks.
  • Aims to improve patient outcomes by enabling proactive management of kidney health.