Chronic health problems such as cardiovascular disease, diabetes, obesity, cancer and kidney disease account for more than 75% of the nation's $2.7 trillion in annual spending for medical care, says Ursula Bauer of the Centers for Disease Control and Prevention.
He might need to have one while waiting for a TS clearance to go thru. They take from 1-4 months for the interim, the TS clearance could take from 1 month to 2 years from what I have seen. I had to wait 2 years for the final one to go thru. As I said I have also seen people get them really fast too.
A two-step tuberculin test is recommended for certain situations. This test consists of two TSTs (or a TST followed by IGRA) separated by 1â3 weeks. If a live vaccine is administered, the first dose of a two-step TST should be delayed for 4 weeks, and if additional doses of live vaccines are indicated thereafter, they should be delayed until the second TST (or the IGRA after an initial TST).