Introduction to Quality Control (Online Course)
  (based on 2898 customer ratings)
Authors: Jean Houger Hengesbaugh, MS, CLS(NCA) and Brad Westover, BS
Reviewer: Barbara Cebulski, MS, MLS(ASCP)CM
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.
Continuing Education Credits
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
Click on a link in the outline to view a sample page from this course.
- Introduction to Quality Control
- Quality Control Tools
- 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
Additional Information
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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