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Doctor insights on: Allergic Reaction To Mantoux Test

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What is the result of mantoux test if it shows induration is 18mm and it is red?

What is the result of mantoux test if it shows induration is 18mm and it is red?

Exposure to TB: What you have described meets the criteria for a positive mantoux test result. A positive result means that the person has been exposed to tuberculosis. It does not mean that the person has tb, just that at one time the person was infected with the TB microorganism.

Dr. John Chiu
2,615 Doctors shared insights

Allergies (Definition)

Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and ...Read more


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How can I recognise mantoux test result is negative?

How can I recognise mantoux test result is negative?

No induration: If you run your finger, gently, over the site of the injection and do not feel any hardness like a grain under the skin, it is negative, However, it is not a good idea to be one's own doctor and you should go back to your doctor 48 hours placing of the test, so that s/he may read it professionally.

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What is the result of mantoux test if it shows induration : 18mm and erythema : present?

Positive: If you do not have active symptoms of tuberculosis and have not received bcg in the past year, then it is likely you have inactive tuberculosis. This means that you have living mycobacterium tuberculosis in your body, contained within a granuloma and potentially could reactivate at some later time. Depending on your age and health you may want to take inh. See a doctor.

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My mantoux test result is "erythema & induration present diameter 10 mm. What is the interpretation?

Exposure to TB: What you have described meets the criteria for a positive mantoux test result. A positive result means that the person has been exposed to tuberculosis. It does not mean that the person has tb, just that at one time the person was infected with the TB microorganism.

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Is bleeding supposed to occur during a mantoux test?

Is bleeding supposed to occur during a mantoux test?

Not usually: You are supposed to inject as small amount (0.1 ml.) of the material into the very upper layer (epidermis) of the skin. There are a few capillaries there so there might be a tiny bit of blood but not usually.

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Mantoux test positive?

Mantoux test positive?

Work up needed: At the very least it may suggest that you have been exposed to tuberculosis. You should visit with your doctor to have questions asked about whether or not you have TB symptoms to suggest infection such as do you have a cough? Unexplained night sweats? Unexplained weight loss, fevers or chills and fatigue? You also need to have a chest x ray performed - since organism is usually inhaled.

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How to take mantoux test?

How to take mantoux test?

TB test: This is a test for tuberculosis. It is a skin test placed by a medical professional.

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Procedure of mantoux test?

Procedure of mantoux test?

Wheal: The tuberculin skin test is administered to the upper third of the forearm (palm up)? 2 inches from elbow, wrist, or other injection site. If neither arm can be used, it can be given in the back of the shoulder. Use a 1/4 to1/2 inch 27-gauge needle or finer tuberculin syringe. It should form a wheal 6-10 mm in diameter, and it is interpreted 48-72 hours later.

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What is the purpose of the mantoux test?

What is the purpose of the mantoux test?

Tuberculosis test: It is done to see if you have ever been exposed to TB.

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After a full - course of treatment for TB infection, how long will it take for mantoux test to read normal?

After a full - course of treatment for TB infection, how long will it take for mantoux test to read normal?

Will Always be (+): Once you have had a positive test it will remain (+) forever, even successfully treated. That is why you never need to or should repeat it. You just have to inform whomever is requiring the test that you are a "Tuberculin Reactor." This does not mean you have active TB.

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Suffering from cough and fever fatigue since two weeks, Mantoux test was negative sputum AFBwas negative?

Suffering from cough and fever fatigue since two weeks, Mantoux test was negative sputum AFBwas negative?

Mgt: There are many causes of prolonged cough. If you a fever, chills, infection should be considered and treated accordingly. If your cough is dry, asthma, allergies, should be evaluated. If you have smoke exposure, discontinue please. A check up with your PCP is indicated.

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My doc refused to do urinary PCR to check for scrotal tb, he insists mantoux test is accurate enough. Is mantoux test reaaly that sensitive?

My doc refused to do urinary PCR to check for scrotal tb, he insists mantoux test is accurate enough. Is mantoux test reaaly that sensitive?

Why?: Like me, your doctor probably wonders why on earth you think you have scrotal tb. A mantoux test is a good test for determining whether you harbor the TB bacillus. If it's negative, you should probably look for another explanation for whatever is bothering your scrotum.

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What are the tests for allergic reaction to insect bites?

What are the tests for allergic reaction to insect bites?

Skin test or blood: When you see an allergist, they will first take a detailed history of your symptoms from the bite. And the type of insect involved, if known...Depending on the insect, a series of simple scratch tests can be done, or sometimes a blood testis done first. It depends on your reaction history.

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What can be done in advance of an MRI to ensure the contrast does not cause an allergic reaction? Is there any way to be extra cautious or do a test?

What can be done in advance of an MRI to ensure the contrast does not cause an allergic reaction? Is there any way to be extra cautious or do a test?

MRI = very safe: No need to do anything in advance. The incidence of true reaction to MRI contrast is on the order of 1 in 10, 000 or less. If your kidney function is decreased for any reason, the radiologist may choose not to give contrast to prevent a rare complication called nsf, but it has nothing to do with allergy.

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What about allergic reaction from the test (tubersol?

What about allergic reaction from the test (tubersol?

None: There is no allergic reaction to the tubersol (tb mantoux) test. If there is a swelling and redness around the site of the test, it may mean that the test is positive and this has to be confirmed by your doctor who will determine what step needs to be taken next.

Dr. John Chiu
1,037 Doctors shared insights

Allergic Reaction (Definition)

Sensitivities to substances, called allergens, that come into contact with the skin, nose, eyes, respiratory tract, and gastrointestinal tract. They can be inhaled into the ...Read more