Top
10
Doctor insights on: I Had Bcg What Do I Do In Us When Tb Test Is Positive

Share
1

1
I had bcg. What do I do in us when TB test is positive?

I had bcg. What do I do in us when TB test is positive?

BCG: Within 3 yrs after receiving BCG most individuals do not have false positive skin tests for tb. If one has a positive PPD skin test, the overwhelming probability is that they have inactive tuberculosis. ...Read more

Dr. Scott Lindquist
587 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


2

2
If I have a BCG vaccine do I need xray every time I get TB test?

If I have a BCG vaccine do I need xray every time I get TB test?

No: After a number of years, most positive tests caused by BCG will wane to negative. Also, the interferon gold blood test can be used. ...Read more

See 1 more doctor answer
3

3
Why would someone born in india get a false positive on a PPD TB test?

Why would someone born in india get a false positive on a PPD TB test?

Easy: What determines a false-positive test? Either not measuring induration, or that it was due to prior bcg, which seldom lasts more than 5 yrs. If someone has a negative PPD it means either that they do not have a focus of inactive tuberculosis or that they are anergic (incapable of reacting due to deficiency in immune mechanisms). ...Read more

4

4
I am a medical assistant and had my TB test come back positive but cxr negative. Is there any follow up I should do?

I am a medical assistant and had my TB test come back positive but cxr negative. Is there any follow up I should do?

Yes: For a person with a positive PPD skin test and a negative chest x-ray, if he had a BCG vaccine in the past, he can do a quantiferon TB blood test to see if he was exposed to real TB or just to the BCG shot. If he never had a bcg, he can talk with his doctor to decide if he should take inh prophylaxis against tb. If it is not sure if he truly truly was positive on the skin test, he can repeat it. ...Read more

5

5
If i take Benadryl (diphenhydramine) a day after i got the TB test will it interfere with it? (make it positive/negative)

If i take Benadryl (diphenhydramine) a day after i got the TB test will it interfere with it? (make it positive/negative)

No effect: The reactivity of the tuberculin test relies on immune factors not allergic responses. Benedryl will have no effect on that process. ...Read more

See 1 more doctor answer
6

6
Recently, i had a TB test come back positive. For the past 3 years, i've been having neurological problems. Could these two be related?

Could be: Not necessarily linked, but depending upon what the symptoms are, they could be linked. Seeing neurologist and/or investors disease specialist? ...Read more

8

8
Could you tell me what happens if I have a positive TB test?

Could you tell me what happens if I have a positive TB test?

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, physical examination, chest x-ray, & any other pertinent lab tests. ...Read more

9

9
How difficult must an induration be to be considered positive TB test?

PPD: It is not about hardness of the induration it is about the size of the area of induration. It is harder than surrounding skin. ...Read more

10

10
Did the TB test when i was small as far as i know it came back positive, i'm i at high risk if i was around someone with active tb.What should I do?

Get tested: Please see a doctor and get tested. You will need the quantiferon gold test. If positive, you'll need medication and chest x ray screenings. ...Read more

Dr. Klaus D Lessnau
1,185 doctors shared insights

Tuberculosis (Definition)

Is an infection in the body with mycobacterium tuberculosis. It is almost always acquired via the respiratory tract from which it can spread to other organs. After that, the immune system walls the bacteria off. All of this usually occurs without symptoms. After that, activation of the infection can occur in about 10% of the total patients. Half of this risk is in ...Read more