![]() But it can also affect other parts of the body, including the brain, spine, and kidneys. TB is a bacterial infection that mainly attacks the lungs. There is usually a negligible risk of severe swelling and redness, particularly if you have had a PPD test and you’re having it redone.A tuberculosis screening test checks to see if you have the bacteria (germs) that cause tuberculosis (TB) in your body. He/she will check whether the area where you received the shot reacted to the PPD. You must go back to see your doctor after 2 or 3 days. Do not cover the test site with a tape or bandage.To avoid confusing test results, you should pay attention to the following: A small welt or bump will appear and go away after a few hours. The doctor will then give you a shot that contains PPD under your skin’s top layer. To do the positive vs negative TB test, firstly, your doctor will swab the skin on the inner side of your forearm. You have any concerns regarding the test, its risks, or the way it’s performed.Have a rash on the skin that might make it hard to read the test result.Are on medication that affects your immunity (e.g.being around a TB patient, travelled to a country where tuberculosis is common) You’ve been diagnosed with TB in the past.You have TB symptoms such as coughing, sweating and unexplained weight loss.You’ve had an adverse reaction to the tuberculin skin test in the past.Your immune system is weak due to diseases or medication.īefore taking the PPD test, you should let your doctor know if:.You have been in close contact with someone who has TB.You also need to take the positive vs negative TB test if: If you are a healthcare professional, you should get routine screens for TB by taking the PPD skin test. It is only 2 nd to HIV and AIDs according to the World Health Organization. TB is one of the most contagious diseases and also one of the greatest killers. If those tests confirm that you have tuberculosis, further analysis of your sputum should be done to look for the TB bacteria. If your skin test result turns out positive, the doctor might order you an imaging test such as chest X-ray or CT scan to provide more information. ![]()
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