I'm an RN. Have done a lot of TB tests. The skin PPD test involves injecting 0.1 ml of the solution right under the skin. It gets checked in 48-72 days to see if reaction. The solution is really no big deal. There is also a blood test that can be done- it's called a QFT (Quantiferon test). Blood drawn and sent to lab. The company we use takes about 3-5 days for results. Blood test is more accurate that skin test but most companies use the skin test. It's cheaper.
I'm an RN. Have done a lot of TB tests. The skin PPD test involves injecting 0.1 ml of the solution right under the skin. It gets checked in 48-72 days to see if reaction. The solution is really no big deal. There is also a blood test that can be done- it's called a QFT (Quantiferon test). Blood drawn and sent to lab. The company we use takes about 3-5 days for results. Blood test is more accurate that skin test but most companies use the skin test. It's cheaper.