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Quality Assurance01:19

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Quality assurance is the overarching term used to describe the activities employed to ensure the proper performance of a system. These activities can be classified into three categories: quality control, quality assessment, and internal corrective measures. Typically, these activities work cyclically: quality control is performed before and during the analysis, while quality assessment occurs during and after the investigation. Internal corrective measures are implemented based on the findings...
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Data validation is an essential part of a comprehensive assessment. Validation is confirming or verifying and opening the door to gathering more assessment data as it clarifies vague or unclear data. The process of checking and verifying the collected information is called data validation. The primary purpose of data validation is to ensure data is as free from error, bias, and misinterpretation as possible.
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Method validation is a crucial process in analytical chemistry designed to confirm that a given method consistently produces reliable and high-quality results. This process is essential when a method is applied to different sample matrices or when procedural modifications are made, ensuring that the results meet acceptable standards across various applications.
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Quality control is one of the three cyclical quality assurance activities that help keep a system under statistical control. Typical quality control activities include creating quality control charts, conducting proficiency testing, and documenting and archiving results.
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In concrete preparation, the quality of water is paramount as it affects the strength and durability of the concrete. Potable water is usually preferred; however, it must not have excessive sodium or potassium to prevent compromising the concrete's integrity. Water quality is typically evaluated based on impurities such as dissolved solids, chlorides, and sulfates, and its pH value is ideally between 6 and 8. Even slightly acidic natural water may be acceptable unless it contains harmful...
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When the quality of water for concrete preparation is uncertain, its impact on the setting time of cement and compressive strength of mortar is assessed by comparison with de-ionized or distilled water benchmarks. American Society for Testing and Materials (ASTM) C1602 requires the setting times to be within 90 minutes of the control, British Standard (BS) 3146:1980 allows a 30-minute variance in the initial setting, while British Standards European Norm (BS EN) 1008 specifies initial setting...
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Data connectivity: A critical tool for external quality assessment.

Ben Cheng1, Brad Cunningham2, Debrah I Boeras1

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Summary
This summary is machine-generated.

Connectivity for point-of-care (POC) HIV tests enhances quality assurance and reduces turnaround times. This technology improves HIV testing, disease surveillance, and health system efficiency.

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Area of Science:

  • Clinical diagnostics
  • Health informatics
  • Public health

Background:

  • Point-of-care (POC) testing decentralizes HIV diagnostics, presenting challenges in training and quality assurance.
  • Electronic result exchange and embedded connectivity in POC devices address these decentralization challenges.
  • Automated data transmission from POC devices to central databases enables real-time monitoring.

Purpose of the Study:

  • To evaluate the impact of connectivity in POC diagnostic instruments on HIV testing quality and health system efficiency.
  • To assess the role of electronic data exchange in improving external quality assessment (EQA) and supply chain management.
  • To explore how technology can support achieving global HIV targets (e.g., 90-90-90).

Main Methods:

  • Implementing connected POC diagnostic instruments for HIV testing.
  • Establishing electronic data transmission from field devices to a central Ministry of Health database.
  • Linking diagnostic data with supply chain management software.
  • Conducting a pilot program in Zimbabwe to assess system performance.

Main Results:

  • Connectivity significantly improved the turnaround time for external quality assessment (EQA) result submissions.
  • Timely corrective actions were enabled by rapid feedback on instrument performance and operator competency.
  • Linking data to supply chain software helped minimize stock-outs.
  • Automated data transmission facilitated real-time monitoring of diagnostic operations.

Conclusions:

  • Connected POC diagnostic technology enhances the quality and efficiency of HIV testing programs.
  • Real-time data enables improved quality assurance, operator training, and timely interventions.
  • This technology strengthens health systems and supports disease surveillance for achieving global HIV goals.