Is it possible to have a positive acid fast bacilli sputum test and at the same time also have a negative mantoux ppd test?
Both of these test for TB...so would having a + AFB test automatically mean that you have TB? I had a pt today who was growing bacteria in the sputum samples but they had a ppd test done and it was negative. I don't get it! Wouldnt this mean that you have active TB?
I don't mean to hi-jack the thread but I have a couple of questions which are primarily for the LTC nurses although not exclusive. Do you utilize the 2-step PPD testing on admission to reduce false negatives and have you seen the booster phenomenon? Is this done for everyone or just the patients determined to be more at risk with immune system compromises other than just age?
The LTC can also include those in the prisons and other long term incarcerations.
Last edit by GreyGull on Sep 27, '10