Test performance measurement

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Term: 2014
Published: February 27, 2014
Revised: April 8, 2014

Serological tests are often described by those using them as good, accurate, useful, unreliable, difficult to perform, etc. These loose descriptions indicate that there are differences in the accuracy and usefulness of different tests that require accurate definition and quantitation.  In this chapter the essential terms used to describe test performance and the measurement of the necessary parameters are discussed.

The following topics will be covered in this sub-module:

  • Sensitivity
  • Specificity
  • Determination of D-SN and D-SP
  • Specificity and Sensitivity requirements for a test
  • Predictive value (PV) of a test
  • Comparing two tests
  • Precision
  • Reproducibility
  • Validity and validation of test methods

About The Instructor

Dr Jannie Crafford

Dr Jannie Crafford

  • BVSc, MSc
  • Senior lecturer, Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria
Creative Commons Attribution 4.0 International
This Work, Test performance measurement, by Dr RW Worthington is licensed under a Creative Commons Attribution license.