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what is a positive tb test look like

A member asked:
Dr. Josephine Ruiz-healy
39 years experience Pediatrics
Skin test: If you had a PPD skin test and you have no risk factors, a positive test is when after 48 to 72 hoursyou have swelling in the site and redness that m ... Read More
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A 53-year-old member asked:
Dr. Heidi Fowler
25 years experience Psychiatry
What is important: is what it feels like - not how it looks. Induration is palpated & measured. Treatment (such as INH) is determined once it is established where t ... Read More
A 24-year-old female asked:
Dr. Robert Killian
28 years experience General Practice
TB Tests: I bet you could google image that question. A positive reaction is read after 48 hours from the test. It would be a raised redness greater than 5 mm ... Read More
A 43-year-old female asked:
Dr. Carlo Hatem
25 years experience Pulmonary Critical Care
Chest X ray: It is possible to have active TB with very little symptoms especially early on. However, it is more than likely that you carry the germ for TB in a do ... Read More
A 35-year-old member asked:
Dr. Gregory Patrick
45 years experience Pulmonology
If there is a bump: When TB infects the body the infection gets walled off by antibodies. The medical person injects a manufactured antibody under your skin that reacts t ... Read More
A 35-year-old member asked:
Dr. Lokesh Guglani
21 years experience Pediatric Pulmonology
Size of induration: After the TB test, the skin at the site can develop swelling (induration). The size of this swelling (measured in millimeters by a health care provide ... Read More
A 48-year-old member asked:
Dr. Lokesh Guglani
21 years experience Pediatric Pulmonology
48-72 hours: Tb test is meant to be interpreted in 48-72 hours after being administered on the forearm. Make sure that the induration (not redness) is measured in ... Read More
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A 43-year-old member asked:
Dr. Heidi Fowler
25 years experience Psychiatry
Latent vs active TB: If you have a + PPD then you will be screened to determine if you have TB infection or TB disease. The physician will obtain a medical history, physi ... Read More
A 42-year-old member asked:
Dr. Thomas Riney
37 years experience Pediatrics
I would wait: You should be done in 6-12months with your inh, and it would be prudent to wait if possible. If you are already pregnant on inh , the risk of affect ... Read More
A 61-year-old male asked:
Dr. Donald Colantino
61 years experience Internal Medicine
No wait: There is no need to wait if antibiotics are indicated.

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