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How to Read a Tuberculosis Skin Test|Preparing for the Test|How to Properly Place a TB Skin Test
tuberculosis. It usually affects the lungs but can affect any part of the body. A person should get tested for TB if s/he has been around an infected person or suspects that s/he may have been exposed to the infection. The Mantoux tuberculin skin test, also known as the PPD test, is a screening tool to test a patient’s exposure to tuberculosis. This test only reflects whether the patient has been infected with TB bacteria, and cannot distinguish whether s/he has latent TB infection or TB disease. It is important to have a trained healthcare provider carefully and properly administer the test for the best chance of an accurate reading.
Gather your supplies. Before administering the test, gather all of the necessary supplies, including:
A vial of tuberculin (tuberculin should always be stored in a refrigerator)
Small disposable tuberculin syringe, 1.2 cc or smaller, with a needle 25 g or smaller
Ruler with millimeter measurements
Sharps disposable container
Check the tuberculin’s expiration, date of opening, and whether it’s single or multidose. Before attempting to administer the tuberculin, verify that it’s safe and appropriate to use.
The expiration date should be printed on the label. It will indicate when an unopened vial should no longer be used. If the expiration date has passed, don’t use the vial.
Check the date the vial was opened. The label should also specify a beyond-use date indicating how long after its initial opening a vial can still be used. If the beyond-use date has passed, don’t use the vial. Your local health department will be able to let you know the exact number of days after a multidose vial is opened before you must discard it.
The manufacturer’s guidelines should state whether the vial is single or multidose. A multidose vial includes a preservative that allows you to administer it to more than one patient.
Make sure you have a good area for administering the test. You will need a firm surface for the patient to rest his/her arm on. The area should be well-lit and clean
Wash your hands. Wash with warm water and soap, scrubbing liberally for 20 seconds.
Rinse your hands with a paper towel and put on a pair of latex gloves.
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Preparing for the Test,
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have a trained healthcare provider ,
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