Thursday, March 1, 2012

PPD skin test to diagnose tuberculosis


PPD skin test to diagnose tuberculosis?
After injection of PPD extract there was no induration or a level of hard swelling just a red spot. Is red spot measured for PPD result if there is no induration or a level of hard swelling?
Medicine - 2 Answers
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1 :
Last time I checked, you needed induration (hard swelling).
2 :
no just the induration


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