相关实验视频

Updated: May 21, 2025

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements
10:22

Split Point Analysis and Uncertainty Quantification of Thermal-Optical Organic/Elemental Carbon Measurements

Published on: September 7, 2019

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临床化学测量不确定性的评估及其与分析性能规格的比较

Nishtha Wadhwa1, Kiran Bhat1, Mansi Kalsi1

  • 1Biochemistry, Himalayan Institute of Medical Sciences, Dehradun, IND.

Cureus
|March 18, 2025
PubMed
概括

临床实验室必须根据分析性能规范 (APS) 评估测量不确定性 (MU). 这项研究发现,一些测量值超过了APS,突出了对患者安全和诊断准确性的潜在风险.

关键词:
分析性能规范 分析性能规范测量不确定性 测量不确定性计量学可追溯性 计量学可追溯性质量控制质量控制质量控制不确定性是一种不确定性.

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In analytical chemistry, we often perform repetitive measurements to detect and minimize inaccuracies caused by both determinate and indeterminate errors. Despite the cares we take, the presence of random errors means that repeated measurements almost never have exactly the same magnitude. The collective difference between these measurements - observed values - and the estimated or expected value is called uncertainty. Uncertainty is conventionally written after the estimated or expected value.
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Scientists typically make repeated measurements of a quantity to ensure the quality of their findings and to evaluate both the precision and the accuracy of their results. Measurements are said to be precise if they yield very similar results when repeated in the same manner. A measurement is considered accurate if it yields a result that is very close to the true or the accepted value. Precise values agree with each other; accurate values agree with a true value.  Highly accurate...
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Instrument calibration is essential for ensuring that instruments produce accurate and consistent results. It is vital in manufacturing, healthcare, testing laboratories, and scientific research. Calibration processes are specific to each instrument and help enhance data accuracy. Each instrument has a unique calibration process tailored to its design and function to improve data accuracy.
Analytical Balance Calibration
An analytical balance measures mass and requires regular calibration to...
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