1 / 9

Module 6 Lab Exercise I: Quality Control and Construction of Levey -Jennings Charts

Module 6 Lab Exercise I: Quality Control and Construction of Levey -Jennings Charts. Levey-Jennings Activity Objectives. At the completion of this activity, you will be able to:

brielle-mendoza
Download Presentation

Module 6 Lab Exercise I: Quality Control and Construction of Levey -Jennings Charts

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Module 6 Lab Exercise I: Quality Control and Construction of Levey-Jennings Charts

  2. Levey-Jennings Activity Objectives At the completion of this activity, you will be able to: • Perform statistical analysis on analyte values from the previous month’s control values, both normal and abnormal levels, to determine Mean, SD, %CV. • Draw a Levey-Jennings chart, label the x and y axis correctly, and properly label the LJ chart for documentation and filing. • Plot current month’s values daily and evaluate LJ chart for Westgard single rule violations, trends, shifts. • Discuss the necessity of Quality Control Result documentation and how they assess precision and accuracy.

  3. Quality Control Exercise #1 • Quality control sample measurement is used to test the analytical phase of patient testing. • This first exercise provides quality control sample results to calculate statistics and establish a Levey-Jennings chart.

  4. Last Month’s QC Values (Glucose mg/dL)For Establishing the QC Ranges • Calculate the Mean: __________ • Calculate Std Dev: __________ • Calculate %CV: __________ • Determine • + 3 SD Range: ____________ • 5. Construct graph & plot all points

  5. Instrument: _________________ Test: ____________________ Units: ________Method: ____________________ Month/Year: ______________ Tech: ________ Control: ____________________ Lot #: ____________________ Exp: _________Control Mean: _______________ 1 Std Dev: ________________ -+3 SD Range: ___________ + 3s + 2 s + 1 s Mean - 1 s - 2 s - 3 s Days

  6. Now Plot the following QC Values (Glucose mg/dL)

  7. This is what the LJ Chart should look like including plotted data

  8. Exercise #2Evaluate the following QC chart by identifying out of control data, outliers, shifts, and trends

  9. Key QC Lecture Activity #2 • 3 circled areas and 2 pointers note analytical problems shown by patterns of QC results. What are they?

More Related