Subscriber Login   Users   Administrators
Online CE, compliance, and document control for clinical and histology laboratories

Sample Page

The page below is a sample from the MediaLab course, Tuberculosis Awareness for Health Care Workers.

Learn about Compliance & CE courses available for clinical laboratories and individual medical technologists.

TST False Negative Reactions

A false-negative reaction is no induration after a TST, even if the person is infected with Mycobacterium tuberculosis. Some causes of this are:

  • Weakened immune system
  • Recent, old, or overwhelming TB infection
  • Immature immune system (<6 months of age)
  • Some viral illnesses
  • Recent live-virus vaccinations
  • Incorrect TST administration or interpretation

 

 

MediaLab, Inc.

http://www.MediaLabInc.net    |    (877) 776-8460 (tollfree)    |    sales@medialabinc.net