Related Experiment Video
Updated: Aug 7, 2026

Quality-Controlled Sputum Analysis by Flow Cytometry
Published on: August 9, 2021
Quality control by blind sample analysis
Abstract:
Quality control efforts may be biased consciously or unconsciously. External programs are handicapped by the time lapse before poor performance is disclosed. Bias induced into internal and external quality control efforts by special handling may be eliminated through submission of blind samples originating from wards, clinics, or phlebotomy areas. Evaluation of laboratory performance is obtained under conditions similar to those experienced by the patients' specimens. Calibration performance by operators, which varies considerably, can be monitored. Laboratory clerical activity can be scrutinized and errors quantitated and corrected. Perhaps most important, the sum of the effects of specimen handling and analytic variability can be determined.
More Related Videos
Related Concept Videos
Blind Procedures
Blinding
Systematic Error: Methodological and Sampling Errors
Sampling errors originate from improper sampling methods or the wrong sample population. These errors can be minimized by refining the sampling strategy. Defective instruments or faulty calibrations are the sources of instrumental...
Quality Control
Quality control helps track data, visualize trends, and identify variations, making it easier to detect deviations that may affect the accuracy of an analysis. One way to do this is by generating a quality control chart, which...
Quality Assurance
Data Validation
Key parameters for method validation include:

