 Hey guys, this is day 19 out of 30 of our pants review day 18 was all about ppd tests And we're gonna stick with our TB theme because it's such an important screening tool in our health care practice And I'm gonna ask you what is the gold standard test for TB for tuberculosis both for latent and for active infections? So there's two answers give me the gold standard test for tuberculosis both latent and Active infections give you a few seconds to think about it Okay, so the gold standard test for latent and asymptomatic Cases of TB just basically screening test to see if somebody might have it is gonna be the ppd Which is what we talked about last week the 15 millimeters or more for low-risk folks The 10 millimeters in duration or more for high-risk folks and the 5 millimeters or more of induration for ultra high-risk folks If you don't know those then go back to our day 18 and review that The gold standard test for an active infection as if you really suspect someone might have it Tuberculosis they have fever they're coughing they have hemoptosis means coughing up blood They have weight loss with all these symptoms. You really strongly suspect TB the gold standard test to confirm TB is Acid fast bacilli on sputum culture So again the two gold standard tests for TB one for a latent infection for someone who is asymptomatic That's gonna be your manto test or ppd the intradermal injection And then 48 hours to 72 hours afterwards the interpretation and then your active Or symptomatic gold standard test for TB is gonna be acid fast bacilli on sputum culture