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Related Concept Videos

Urine Studies I: Urinalysis01:29

Urine Studies I: Urinalysis

Urinalysis is a widely used diagnostic test that analyzes urine's physical, chemical, and microscopic characteristics. Healthcare providers use it to detect and monitor various health conditions, including renal disease, urinary tract infections (UTIs), diabetes, and metabolic or systemic disorders.Components of UrinalysisUrinalysis consists of three primary components: physical, chemical, and microscopic examination. Each provides unique insights into the urine sample and, by extension, the...
Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

Acute Kidney Injury IV: Diagnostic Studies and Prevention

Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
Acute Kidney Injury I: Introduction01:22

Acute Kidney Injury I: Introduction

Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
Acute Kidney Injury V: Interprofessional Care01:20

Acute Kidney Injury V: Interprofessional Care

Acute Kidney Injury (AKI) requires a collaborative healthcare approach to restore renal function and prevent complications. Essential management strategies involve monitoring fluid and electrolyte balance, adjusting medications, initiating dialysis when necessary, and providing nutritional support.Fluid and Electrolyte ManagementFluid Monitoring: Regularly monitoring body weight, central venous pressure, and urine output helps detect fluid imbalances early. Patient intake and output are...
Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care01:30

Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care

A healthcare provider can diagnose a urinary tract infection (UTI) through several methods:Medical History and Symptoms: The provider will take a detailed medical history and ask about symptoms such as frequent urination, burning sensation during urination, and lower abdominal pain.Urinalysis: A clean-catch urine sample is collected in a sterile container and tested for the presence of bacteria, white blood cells (leukocytes), nitrites, blood, and protein. The presence of leukocytes and...

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Related Experiment Video

Updated: May 8, 2026

CRISPR-Cas-mediated Multianalyte Synthetic Urine Biomarker Test for Portable Diagnostics
04:33

CRISPR-Cas-mediated Multianalyte Synthetic Urine Biomarker Test for Portable Diagnostics

Published on: December 8, 2023

An aggregate urine analysis tool to detect acute dehydration.

Robert G Hahn1, Nana Waldréus

  • 1Dept. of Anesthesiology, Linköping University, Linköping, Sweden.

International Journal of Sport Nutrition and Exercise Metabolism
|September 3, 2013
PubMed
Summary

Urine analysis effectively estimates dehydration in adults aged 17-69. A new dehydration index, using four urine markers, accurately measures exercise-induced weight loss in men and women.

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Low-Cost, Volume-Controlled Dipstick Urinalysis for Home-Testing
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Low-Cost, Volume-Controlled Dipstick Urinalysis for Home-Testing

Published on: May 8, 2021

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Last Updated: May 8, 2026

CRISPR-Cas-mediated Multianalyte Synthetic Urine Biomarker Test for Portable Diagnostics
04:33

CRISPR-Cas-mediated Multianalyte Synthetic Urine Biomarker Test for Portable Diagnostics

Published on: December 8, 2023

Low-Cost, Volume-Controlled Dipstick Urinalysis for Home-Testing
06:55

Low-Cost, Volume-Controlled Dipstick Urinalysis for Home-Testing

Published on: May 8, 2021

Area of Science:

  • Exercise Physiology
  • Sports Medicine
  • Biochemistry

Background:

  • Previous research focused on young male athletes for dehydration detection.
  • The need exists to validate urine analysis for broader populations.

Purpose of the Study:

  • To investigate urine analysis as a dehydration measure in adults across a wide age range.
  • To assess if urine markers can quantify dehydration in diverse adult demographics.

Main Methods:

  • 57 volunteers (17-69 years) provided urine samples and body weight before and after 90 minutes of exercise.
  • Urine analysis included color, osmolality, specific gravity, and creatinine.
  • A composite dehydration index was developed from these four urinary markers.

Main Results:

  • Body weight decreased by a mean of 1.1% post-exercise.
  • Strong correlations (r=0.73-0.84) were found between the four urine markers.
  • The dehydration index significantly increased post-exercise, correlating with estimated weight loss.
  • Men showed higher baseline dehydration than women; age did not impact results.

Conclusions:

  • Urine sampling is a viable method for estimating dehydration-induced weight loss in adults up to age 70.
  • A composite dehydration index enhances accuracy by mitigating confounding factors.
  • Findings support the use of urine analysis for monitoring hydration status in a general adult population.