In case you missed: Tuberculosis is one of the deadliest infectious diseases in human history.Here's why. How long do PPD test results take? Results of a PPD test are not immediate because the ...

The Mantoux test, using 0.1 ml. of Old Tuberculin in 1:1000 dilution, ... The optimum period for reading the Heaf test had proved to be more than three days after application, ...

If you have experienced tuberculosis (TB) exposure or have symptoms, Medicare may cover a purified protein derivative (PPD) test. If you don’t have symptoms and haven’t experienced TB exposure ...

If a person has been exposed to tuberculosis (TB), Medicare may cover the costs of a purified protein derivative (PPD) test. Read more.