Which of the Following Is a Cause of a Shift

question 19

Multiple Choice

Which of the following is a cause of a shift?

• A) Rerunning a control material
• B) Not performing maintenance when due
• C) Improperly prepared reagent
• D) Analyzing a patient sample without a barcode

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Definitions:

Random Variation

The unpredictable fluctuation in data points that results from a multitude of unspecified factors.

Process Control Charts

Graphical displays used to monitor the stability and performance of a process over time by plotting various statistics.

P-Charts

Control charts used for monitoring the proportion of defective items in a process over time.

Statistical Process Control (SPC)

A method of quality control which employs statistical methods to monitor and control a process, helping to ensure that it operates at its fullest potential.