The test where you put a needle under the forearm and it makes a bubble. How does it work and what are the signs of a positive and negative result?
Infectious Diseases - 3 Answers
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1 :
Here is all the info you need regarding the tuberculin skin test or PPD. http://www.nlm.nih.gov/medlineplus/ency/article/003839.htm http://www.nlm.nih.gov/medlineplus/ency/imagepages/2823.htm
2 :
The test is called the Mantoux test. Here is a great site address for the Center for Disease Control on the Mantoux test: http://www.cdc.gov/tb/pubs/Mantoux/guide.htm Copy and paste into your browser.
3 :
The test is called PPD or Mantoux. A positive result would be the "bubble" growing and a negative result would the "bubble" does not grow and over time goes away. They inject TB into you
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