[MCOH-EH] Quantiferon gold TB test - preplacement question

Band, Michael DO MBand at watsonclinic.com
Wed Jul 30 10:40:43 PDT 2014

Currently we are using the quantiferon gold TB test for use after a positive ppd for preplacement.

Every once in a while a new doctor or employee are not available for a 48-72 hour ppd read so we do quantiferon instead.

Had a new doctor with a negative ppd one month ago at another facility and her quantiferon gold is negative.

NO symptoms of active TB and no known exposures.  She is in a low risk specialty for TB exposure.

Chest xay normal


1.        I read somewhere that a recent ppd can interfere with the quantiferon gold test.  Not sure if this is true?

2.       What is the next step?  Do we call this latent Tb?  Is it worth repeating the quantiferon gold test?  Could this be a false positive?

Thanks for any help.

Michael Band DO, MS
Watson Clinic

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