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Doctor insights on: What Does Your Arm Look Like After A Tb Test

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Dr. Scott Lindquist
607 doctors shared insights

Mycobacterium Tuberculosis Infection (Definition)

Mycobacterium tuberculosis is an infectious organism that spreads by droplets coughed out by an infected person. Infection is established initially in lungs, but can spread within lungs & to other body parts, or can become latent, with reactivation occurring years to decades later. With effective treatment, it can be completely eliminated although drug resistant ...Read more


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I have pain in my elbow and its hard to move my hand after TB test. What is that mean?

I have pain in my elbow and its hard to move my hand after TB test. What is that mean?

Hard to say...: If you got the test and your arm swelled up shortly afterwards, its possible that either you had an allergic reaction to the test, had a test site infection, or had an unrelated injury while sleeping or (if you had a blackout) were otherwise not aware of your surroundings. Go back to the doctor who gave you the test and have them look. ...Read more

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What should my skin look like after taking a TB test?

What should my skin look like after taking a TB test?

See below: A positive PPD is determined by the presence of swelling(induration) around the injection site. Little or no swelling indicates a negative test. Reddness is not used to determine a neg or pos test. ...Read more

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What does a + TB test look like?

What does a + TB test look like?

Positive PPD test: A positive TB test should look like hard, raised bump with size >5to15 mm depending of the risk category you are in. It should be read in between 48 to72 hours. It is the hardness and not redness which is read. Thanks. ...Read more

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What does a positive TB test look like?

What does a positive TB test look like?

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 measures more than 15 mm, it is considered a positive tb. Test. ...Read more

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What does a negative TB test look like?

What does a negative TB test look like?

Doc: Either your blood test igra is negative or your skin testing does not show any "bump". This should always be checked by a professional since even health care workers report false results. Best to check with a doc and not pa or np or nurse. ...Read more

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What does a positive TB test look like? How is this treated?

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 this is latent or active TB and the type. ...Read more

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What do a positive and negative TB test look like?

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 in circumference. ...Read more

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Is it safe to go tanning after a TB test?

Is it safe to go tanning after a TB test?

No: Tanning is not safe and is not recommended for anyone. It increases the risk of skin cancer and accelerates facial and body aging. Sunscreen with titanium and zinc can help protect you from uva and uvb rays, but avoiding sun exposure is best. Spray tanning and tanning lotions are a reasonable alternative to achieve a bronzed look, but they may not be safe for pregnant/ lactating women. ...Read more

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After a TB test, a normal patient has an induration of more than 15 mm. How is this treated?

After a TB test, a normal patient has an induration of more than 15 mm. How is this treated?

The next step: is to obtain a history, a physical examination and chest x-ray. Latent vs active TB are handled very differently. ...Read more

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Is it normal to have a tiny bit of blood after a TB test? The blood is dry now and is less than 1/10 cm.Got the test today.Bleeded right after shot.

Yes: The standard TB skin test usually involves a small needle injecting test material under your skin. To get it in the proper location the needle will often cause a small amount of blood leak out at the injection site. ...Read more

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How badly does a TB test hurt? I'm extremely terrified of needles and would like to know how bad it will hurt.

None: It does not hurt much.You would feel it as much as you feel an insect bite. To distract yourself get an activity going while it is being done. Goodluck ...Read more

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What does a positive TB test mean?

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 dormant form, this is called latent tb. No symptoms are expected with latent tb. ...Read more

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How do I know if I have a positive TB test?

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 to the TB antibody. If a bump appears at the injection site after 48 hours it means you have the antibody to TB already in your body and therefore have TB infection. It does not mean that you have active disease or are contagious. ...Read more

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How long should you wait in order to repeat a TB test ?

Generally 6 weeks: The need to repeat a TB test generally depends on each individual's previous test results, presence of symptoms & risk factors for exposure to tb. An interval of at least 6 weeks is generally recommended. Talk to an infectious disease specialist for proper interpretation of your testing. ...Read more

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How would i be able to tell if I have a positive TB test?

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 provider within 48-72 hours) determines whether you have a positive result or not. It is important to not measure the area of redness but the actual size of the swelling around the test site. The cut off value for positive test is based on yr risk factors. ...Read more

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Does the TB test commonly appear positive on the first day?

Yes: The TB test can become positive within the first day in someone that has been exposed to TB in the recent past. ...Read more

Dr. Klaus d Lessnau
1,204 doctors shared insights

Tuberculosis (Definition)

A potentially serious infectious bacterial disease that ...Read more