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相关概念视频

Urine Studies I: Urinalysis01:29

Urine Studies I: Urinalysis

40
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...
40
Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

54
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...
54
Controlled-Current Coulometry: Overview01:27

Controlled-Current Coulometry: Overview

239
Controlled current coulometry, also known as amperostatic coulometry, is a technique used in electrochemical analysis to measure the quantity of a substance through the controlled passage of current. It involves the application of a constant current to an electrochemical cell containing the analyte of interest. As the current flows through the cell, the analyte undergoes a redox reaction at the electrode surface, resulting in a charge transfer. By monitoring the time required for a certain...
239
Contaminants and Errors01:16

Contaminants and Errors

112
Effective sample preparation is crucial for accurate and reliable laboratory analysis. During this process, two significant sources of error can arise: concentration bias from improper sample splitting and contamination caused by methods used to reduce particle size, such as grinding or homogenization. Identifying and minimizing these potential errors is crucial to ensuring the validity of the analysis.
Another key consideration is determining the appropriate number of samples required to...
112
Physiology of the Genitourinary System III: Urine Concentration and Dilution01:20

Physiology of the Genitourinary System III: Urine Concentration and Dilution

19
The kidneys concentrate or dilute urine to maintain water and electrolyte balance. Nephrons, particularly the loop of Henle, play a crucial role in this process through the countercurrent multiplication system. This system establishes a high osmolarity in the renal medulla, which is essential for water reabsorption. In the loop of Henle’s descending limb, water is reabsorbed into the surrounding medulla due to its permeability to water. In contrast, the ascending limb actively transports...
19
One-Compartment Open Model: Urinary Excretion Data and Determination of k01:11

One-Compartment Open Model: Urinary Excretion Data and Determination of k

219
The one-compartment open model leverages urinary excretion data to estimate renal clearance, which gauges the kidney's capacity to expel a drug. This method offers several benefits, including directly measuring drug elimination and assessing the kidney's contribution to overall drug clearance. However, this approach has limitations. It assumes sole renal excretion of the drug, which is not true for all drugs. Accurate urinary excretion and plasma drug concentration measurement can also...
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相关实验视频

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Low-Cost, Volume-Controlled Dipstick Urinalysis for Home-Testing
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控制变量及其在野外环境中尿样分析前的影响.

Jingjing Jiang1, Hanxuan Liu2, Wenfeng Ni1

  • 1Clinical and Biological Sample Center, Medical Innovation Research Division of Chinese PLA General Hospital, Beijing, China.

Biopreservation and biobanking
|August 17, 2023
PubMed
概括
此摘要是机器生成的。

在4°C或室温下储存尿样可以保持电解质和代谢物水平. 离心影响-胺转酶和肌球蛋白,在4°C的短时间储存中适合蛋白质分析.

关键词:
肌球蛋白是什么?肌球蛋白是什么?储存时间 储存时间的温度和湿度.一个尿样是尿样.

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科学领域:

  • 临床化学 临床化学
  • 生物化学 生物化学
  • 尿液分析 尿液分析

背景情况:

  • 准确的尿样分析对于诊断至关重要.
  • 需要最佳的存储条件来保持分析物的完整性.
  • 储存中的变化会影响生化和临床检测 (POCT) 的结果.

研究的目的:

  • 为了确定尿样的最佳储存条件.
  • 为了评估温度,湿度和离心机对尿液分析物的影响.
  • 评估常见的生化和POCT指标的储存稳定性.

主要方法:

  • 从10名健康个体收集了尿液样本,并进行了引用.
  • 样品被离心或离心,并存储在不同的温度 (4°C,室温,50°C) 和湿度水平.
  • 分析电解质 ([Na+],[K+],[Cl-]),代谢物 (尿素,肌素[Cr]) 和POCT指标 (肌球蛋白[Mb],微专蛋白[mAlb]) 在不同的时间点 (小时到天).

主要成果:

  • 离心改变了-胺转酶 (GGT) 和肌球蛋白 (Mb) 水平.
  • 电解质和代谢产物在4°C和室温稳定,但在50°C变化.
  • 微专 (mAlb) 在4°C储存时受到显著影响,而Mb在4°C短期稳定.
  • 湿度影响电解质和尿素度,GGT/Cr水平随湿度而变化.

结论:

  • 尿样最好存储在4°C或室温下,以保持电解质和代谢物的完整性.
  • 离心推是推用于特定的测试,如肌球蛋白量化.
  • 离心后在4°C的短时间储存适合某些蛋白质分析,正常湿度一般适合大多数测试.