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A member asked:
What constitutes a current tst
3 doctors weighed in across 2 answers
TST: Tuberculin skin test? It's also called PPD test and it is pertains to medical clearance, it usually makes a PPD test (or equivalent) done within 1 year.
Answered 12/24/2014
6.1k views
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The CDC knows!: Here is a great page from the cdc that has all the information you need: http://www.Cdc.Gov/tb/publications/ltbi/diagnosis.Htm.
Answered 12/9/2013
5.5k views
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