The TB skin test is a simple and painless test that involves injecting a small amount of a substance called purified protein derivative (PPD) into the top layer of the skin on your forearm. This test is designed to detect whether your body has been exposed to the TB bacterium.
The TB skin test is a simple and painless test that involves injecting a small amount of a substance called purified protein derivative (PPD) into the top layer of the skin on your forearm. This test is designed to detect whether your body has been exposed to the TB bacterium.
The TB skin test is a simple and painless test that involves injecting a small amount of a substance called purified protein derivative (PPD) into the top layer of the skin on your forearm. This test is designed to detect whether your body has been exposed to the TB bacterium.
The TB skin test is a simple and painless test that involves injecting a small amount of a substance called purified protein derivative (PPD) into the top layer of the skin on your forearm. This test is designed to detect whether your body has been exposed to the TB bacterium.
The TB skin test is a simple and painless test that involves injecting a small amount of a substance called purified protein derivative (PPD) into the top layer of the skin on your forearm. This test is designed to detect whether your body has been exposed to the TB bacterium.
The TB skin test is a simple and painless test that involves injecting a small amount of a substance called purified protein derivative (PPD) into the top layer of the skin on your forearm. This test is designed to detect whether your body has been exposed to the TB bacterium.