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Doctor insights on: Ppd Test Negative Result

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What does negative PPD result look like?

What does negative PPD result look like?

PPD: Negative test is flat not raised.Ay still be read. Should be interpreted by health care provider. ...Read more

Dr. Mohammed Parvez
142 doctors shared insights

Ppd (Definition)

Tuberculin PPD is an immunization which is a kind of ...Read more


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What does a negative PPD test look like?

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's the difference between a positive and negative PPD test?

What's the difference between a positive and negative PPD test?

PPD: Positive test: 5mm in HIV patients and other immunosuppressed individuals
all others: 10 mm .Measured induration after 48 hours.
Negative reaction: not exposed to tb. ...Read more

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Online site with photos of negative PPD results?

Online site with photos of negative PPD results?

Not necessary: A negative PPD simply means you don't have a lump at the site of the PPD injection 48-72 prior. This means the skin appears normal. If there is a raised bump at the site, then depending on your particular risk factors or history, you may be positive. The next step would be a chest x-ray. But, if no bump, then negative. ...Read more

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Is it possible to have TB after a negative PPD test?

Is it possible to have TB after a negative PPD test?

PPD testing: The answer is yes. A previous exposure to TB (travel to a country where TB is endemic) can result with a negative PPD test before the germs produce disease. Have yourself retested in 8 to 10 weeks if still suspicious or opt for the blood test, quantiferon. ...Read more

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Had a PPD skin test and the result is 10 mm the reference says 5 to 10 is borderline. and i don't get it what they mean and what to do next ?

Positive PPD: A +ve PPD is usually evaluated with a plain Chest Xray. If that is normal, and if it appears that the positive PPD is new (if there is a history of previous negative tests) then a course of treatment with anti-tuberculosis antibiotics is usually given, this prevents you from getting sick with TB. Sometimes a borderline (intermediate) test result can be from a prior BCG vaccination. ...Read more

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Ppd skin test, negative, no reaction and swelling (72 hrs). The test was taken in last tuesday morning, 9am, now it gets swelling and itch. Positive?

Delayed onset ppd: This could represent a positive reaction. Their is a besst confirmatory test called a quantiferon-gold test which is a gamma-interferon release assay for tb. It has some limitations but if positive is very accurate for diagnosis, ask an infectious disease specialist about this if your pcp does not know about this test. ...Read more

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What if a nurse alters the results of your PPD skin test to say zero reaction when there is a reaction? Will you die if you have untreated TB for 15 y

What if a nurse alters the results of your PPD skin test to say zero reaction when there is a reaction? Will you die if you have untreated TB for 15 y

Maybe nothing but...: First, this sounds very unusual. Tell your doctor. Ask it to be repeated & read by the doc or a different nurse.
A positive PPD generally indicates you've been exposed to TB but it's usually not an active infection. Because it does become active in about 10% of people,treatment with Isoniazide is advised,but if over 35 usually is not treated due to risk of side effects: http://tinyurl.com/kspxlua ...Read more

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What is a PPD test?

PPD: The mantoux test (also known as the mantoux screening test, tuberculin sensitivity test, pirquet test, or PPD test for purified protein derivative) is a diagnostic tool for tuberculosis. ...Read more

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What's a two-step PPD test?

As it says: In some people with previous exposure to tb, especially remotely, an imitial TB skin test (tst) will be negative but a repeat, say 2 weeks later, can be positive. It is sort of like waking up the immune recognition of the bug. But, it is not at all clear that those who are only positive on the two-step tst are at risk for reactivation later as those with a 1-step positive tst. ...Read more

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How long does a reaction to a PPD test take to clear?

How long does a reaction to a PPD test take to clear?

Depends: It usually only takes a few days but severe reactions can take 1-2 weeks and can even leave a scar if the reaction was a blistering one. ...Read more

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I just had a PPD test done and feel little bit unwell?

Unlikely from PPD: Never having seen systemic symptoms from placement of a PPD i cannot imagine how this "unwell" sensation might have occurred or if it is related to the ppd. Perhaps a mild allergic reaction to the material in the ppd. Hope you feel better soon. ...Read more

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Are there any dangers from repeating a potive PPD test?

Yes: The reaction the next time around can be more prominent leading to significant pain and discomfort and, potentially, a scar. Once a person has had a positive PPD skin test, they should not have the test repeated. ...Read more

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I just had a PPD test done and ilittle bit unwell afterward?

Unusual: But some people may develop malaise because of the thought of the test, or the immune reaction may precipitate some low grade symptoms, or there may be allergic reactions to material in the PPD preparation. ...Read more

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If I got a PPD shot in august 2011, how long are the results valid?

If I got a PPD shot in august 2011, how long are the results valid?

Depends: The PPD asseses whether you have had a TB infection.If not, and you are infected tomorrow your test will change to positive after a period of time. So the test is only good the day it is done. ...Read more

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My son took a PPD test,it showed 十十,wheather my son must took medicine?

Usually: if the ppd test turned negative for the first time, and he was born in this country and didnt receive the BCG vaccination, usually a chest xray is done and then INH is started for 6 months. A blood test quantiferon can also be done. ...Read more

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How long do I have to wait to leave town after getting a PPD test done?

Do not: After placement, a PPD is read in 48 hrs. This can be done any place you are travelling if you do not mind going to another medical facility. ...Read more

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For what length of time do I have to wait to workout after getting a PPD test done?

You don't have to: Working out will not interfere with a PPD skin test. You do not haave to wait. ...Read more

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Ppd test and after 3 days, the induration measures 8mm. do you think an induration of 8mm is positive?

That actually: depends. Please check the reference to see which factors apply to you. However - who checked the induration? I have always used the ballpoint pen method to determine parameters accurately. Feeling just with fingers alone may be inaccurate.
REF: https://www.cdc.gov/tb/publications/factsheets/testing/skintesting.htm ...Read more

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Can PPD TB tests have thimerosal in them?

PPD TEST/THIOMERSAL: No there is no thiomersal in it, and we only inject 0.1 cc of the PPD liquid in the skin. ...Read more

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What's done for a positive PPD test?

Depends: That depends on your age, other health conditions, and whether you recently went from having a negative PPD to a positive one. In some cases, we treat with a 9 month course of isoniazid, or a shorter course of Isoniazid and rifapentine, to eliminate the latent bacteria. ...Read more

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What does a positive PPD test feel like?

Firmness: The diameter of the circle of hardened skin at the site of the PPD is measured, and depending upon who you are, what underlying diseases you may have, what medications you are taking, it is read in 48 hrs. Do not measure the area of redness, only the area of firmness (induration). Otherwise there are seldom other symptoms. ...Read more

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What can cause a positive PPD test reading?

Mycobacteria: Tuberculosis and other members of the same family, some less severe. There are also "positives" that aren't true in duration - like an allergic reaction at the site within minutes of ppd placement. ...Read more

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What does a positive PPD test look or feel like?

What does a positive PPD test look or feel like?

Depends: Who are you, what underlying conditions do you have. Generally, for a normal non-hiv adult, a one centimeter area of induration (hardness of the underlying tissues) is considered positive. Do not count areas of redness. If positive it means you have living mycobacteria somewhere in your body, although these can remain inactive the rest of your life. ...Read more

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Negative ppd, positve quantiferon, what does this mean?

+ Gamma Assay: Means you where exposed to Tuberculosis and so may require prophylactic therapy.
The gamma assay is more sensitive and specific for Tuberculosis than the Mantoux test (PPD) ! ...Read more

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What's a PPD test for?

What's a PPD test for?

M. TB infection: To determine whether you're infected with mycobacterium tuberculosis, the bacterium that causes tb. A positive test doesn't necessarily mean you have active TB (the disease). You may be latently infected, which means the bacteria are present in the body, but are not making you sick. ...Read more