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If I need a second TB shot how long do I have to wait to get another one done?

By Anonymous December 12, 2009 - 2:37pm
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I had a TB shot done but waited to long to have it checked now I have to redo it so how long do I ha e to wait to have it

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HERWriter Guide

Hi Anon

Thanks so much for your question. When did you get the first test?

Generally you can go ahead and get the test done again now - there is no "waiting period" and remember to get it checked within 72 hours. However, a repeat test can sometimes affect the result so make sure you mention that you had a recent test. According to some sources, repeat testing can make one look like they have a positive result (or having a "booster" effect). If you are not American, the BCG vaccination can do the same thing.

Good luck!

December 12, 2009 - 2:47pm
(reply to Susan Cody)

I had it done on 12-5-09 and went back on 12-12-09 to have it
checked and was told I waited to long , now I have to wait two weeks to have it redone again

December 12, 2009 - 6:27pm
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