Quality Assessment In Lab Flashcards
refers to all of the laboratory’s policies, processes, procedures, and resources needed to achieve quality testing
QUALITY systems
refers to the planned and systematic activities implemented in a quality system so that quality requirements for a product or service will be fulfilled.
Quality assurance (QA)
It is the systematic measurement, comparison with a standard, monitoring of processes and an associated feedback loop that confers error prevention.
Quality assurance (QA)
EXAMPLES OF QUALITY ASSURANCE
● Quality Assurance plan
● Customer satisfaction survey
● Sample adequacy and collection data
● Turn around time
- A system designed to increase the probability that each result reported is valid and can be used with confidence by the physician
- Refers to activities that evaluate, monitor or regulate services
QUALITY CONTROL
EXAMPLES OF QUALITY CONTROL
Running control samples
Control charts
Quality control statistics
is a means to determine the quality of the results generated by the laboratory. Quality assessment is a challenge to the effectiveness of the QA and QC programs.
Quality Assessment
External QC
EQAS
Interlab
Internal QC
Replicate/split sample
Retained
Recheck/repeat sample
● A system for monitoring and evaluating all the various aspects of a service
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● A set of activities designed to ensure that processes are adequate to meet testing objectives
● Includes pre-analytical and post-analytical components of service
QUALITY ASSURANCE
Stages of Quality Assurance
Pre analytical
Analytical
Post analytical
• Decision
• Order request
• Sample collection
• Transport and storage
Pre-analytical/ pre-examination variable
• Decision
• Order request
• Sample collection
• Transport and storage
Pre-analytical/ pre-examination variable
• Analysis
• Quality Control
• Maintenance & Service
Analytical/ examination variables
is the study of those error and Procedures used to recognize and minimize them.
Quality control
The QC system is designed to:
• Provide routine and consistent checks to ensure data integrity, correctness, and
• completeness;
• Identify and address errors and omissions;
• Document and archive inventory material and record all QC activities.
Types of Quality control
Internal quality control (IQC)
External quality control (EQC)
Used to verify the accuracy and precision of a test and are exposed to the same conditions as the patient samples
External QC
are tested and interpreted in the
laboratory by the same person performing the patient testing.
External controls
Is based on monitoring the test procedures that are performed in the
laboratory and includes:
- Measurement on a specifically prepared materials
- Repeated measurement on routine specimens
- Daily statistical analysis of data obtained from routine tests.
Internal QC
The degree of fluctuation in the measurements
precision
The closeness of measurements to the true value
accuracy
used to monitor both the precision
and the accuracy of the assay in order to provide reliable results.
Quality Control
How well a measurement agrees with an accepted value
Accuracy
