Mapei has developed a range of paste products which, because of their nature, are particularly easy to use. The range includes a flexible polymer grout suitable. for coatings on faÃ§ades, including those applied on flexible substrates, and a. highly thixotropic adhesive paste which bonds immediately with no slip.
PPD skin test. The PPD skin test is a method used to diagnose silent (latent) tuberculosis (TB) infection. PPD stands for purified protein derivative. You will need 2 visits to your doctor's office for this test. At the first visit, the health care provider will clean an area of your skin, usually the inside of your forearm. You will get a small shot (injection) that contains PPD. The needle is gently placed under the top layer of skin, causing a bump (welt) to form.
Testing & Diagnosis. Tuberculosis (TB) is a disease that is spread through the air from one person to another. There are two kinds of tests that are used to determine if a person has been infected with TB bacteria: the tuberculin skin test and TB blood tests.f a person does not have TB disease, but has TB bacteria in the body, then latent TB infection is diagnosed. The decision about treatment for latent TB infection will be based on a personâs chances of developing TB disease.