Point tipped

In his presentation What are the Gamma-Interferon Release Assays Teaching us About Latent TB Infection? presented at the 11th Annual Conference of the IUATLD Dr David M. Lewinsohn noted that "A negative IFN-γ assay may not distinguish remote exposure from no exposure" and asks



In the current edition of the journal Infectious Diseases Dr Lewinson reviews the progress of studies and ensuing data thereby revising his opinion of IGRA

..recent data would suggest that a positive IGRA might predict future progression..

..it is the opinion of the authors that the use of IGRAs, when available, is preferred to TST testing in all situations currently recommended for targeted testing by the CDC.

Significantly this report was the result of work funded by grants made by the NIH.


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