online laboratory continuing education for clinical laboratories and med techs

# Introduction to Quality Control (Online CE Course)

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This course presents the basics of quality control in the clinical laboratory. Topics include assayed and unassayed controls, Levey-Jennings plots, Westgard rules, and standard deviation.

### Objectives

• Explain the purpose of a quality control program.
• Define assayed and unassayed controls and the advantages/disadvantages of each type.
• Discuss various quality control tools.
• Prepare a Levey-Jennings control chart.
• Explain the Westgard QC multi-rule approach.
• Define random and systematic errors and causes for each.
• Define accuracy and precision and discuss the statistical tools that are used to monitor each.

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### Course Outline

• Introduction to Quality Control
• Quality Control and a Quality Control Plan
• Which of the following may be included in a quality control plan?
• Quality Control Tools
• Quality Control Tools
• Intralaboratory (Internal) Quality Control
• Assayed and Unassayed Controls
• Internal Quality Control Program
• Determining the Frequency for QC Testing
• Instrument Maintenance
• Record Keeping
• External Quality Assessment
• Commercially available control materials for some laboratory instruments or method systems may be assayed or unassayed. Both will monitor the accuracy...
• If a laboratory is part of a system, it can compare its proficiency testing (PT) results with other laboratories in the system prior to submitting the...
• Delta Checks
• Statistical Analysis of Control Data
• Accuracy and Precision
• Mean and Standard Deviation
• Calculating Acceptable Ranges
• Calculating Acceptable Ranges, continued
• Coefficient of Variation
• Choose whether each statement refers to the mean, standard deviation, or coefficient of variation.
• For a certain method, a control has a mean result of 12 with a standard deviation (SD) of 2. What is the acceptable 95% range for this control?
• Quality Control Charts
• Levey-Jennings Quality Control Charts
• Random and Systematic Error
• Random and Systematic Errors, continued
• Westgard Multi-Rule Approach
• Westgard Multi-Rule Approach, continued
• Responding to Out-of-Control Results
• Which type of error does each rule usually detect?
• A laboratory uses these Westgard QC rules as criteria for rejecting an analytical run: 13s, 22s, and R4sOn which days are there QC violations?
• References
• References

Level of instruction: Basic

Intended Audience: Medical Laboratory Scientists, Medical Technologists, and Medical Laboratory Technicians, Clinical Laboratory Science students.

Course Information: This course provides important basic concepts in quality control that are useful to laboratory personnel who report patient results. Topics include: precision, accuracy, random and systematic errors, standard deviation, mean, and coefficient of variation, quality control tools and an overview of the Westgard multi-rule approach for evaluating QC results.

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