Doctor insights on:
Normal Tb Skin Test Results
Normal chest X-ray & abdominal/pelivic CT scan, but positive TB skin test? I have low grade fevers, extreme fatigue & swollen lymph nodes. Tb?
Unlikely TB: It is unusual to have TB with a normal chest x-ray. You need to see your doctor get a work-up ASAP. ...Read more
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
Tb I had my skin test - redness 40 mm I will do the chest xray tomorrow! But am I contagious? What are the side effects of the treatment for TB?
If you are: Coughing, you are able to spread the disease. They may try to culture to see for check for variants. Standard drugs are inh/ethambutol. Duration of therapy is long. Side effects not too troubling. ...Read more
Tb test: It takes 48-72 hours to read a TB test ...Read more
Different cutoffs: Positive result for TB skin test is based on the size of the swelling (induration) at the site of TB test & additional risk factors that you have for acquiring tb. There are 3 cut offs for determining positive result (5, 10 & 15mm) & each one has different criteria for being used as cutoff for your test. Talk to your doctor to find out whether your test is positive or not based on these factors. ...Read more
TB skin test done. Today I can hardly notice anything on arm just a small dot that's left. Is this normal? Never even had a small bump when it was don
Negative result: If you have ever been exposed to TB (by having it yourself or being close to someone who has), then your body will react to the TB skin test and make a big bump. The fact that your body didn't react means that you have never been exposed to TB and is a negative result! Have a medical professional read the result 48-72 hours after the TB test was applied! ...Read more
Got a TB skin test 10 hours ago, large red area has appeared abd gotten bigger and it looks swollen and is very sore. Normal or not?
Tb skin test negative, quentform TB test negative, bone marrow biopsy results indicative of TB (reacts to ziehl niehlssen), PCR negative. How come?
No...actually: The zn stain is a broad stain for acid fast bacilli of which mycobacterium tuberculosis is one of many. The specific tests like quantiferon or the pcr test are against you having tb. The culture is the "gold standard" but you will need to wait for it. It might turn out be a cousin of TB and that too will grow out of culture. Stay on TB meds until they are certain of the AFB positive organism. ...Read more
No: It is recommended to wait for at least 48 hours before interpreting the size of the swelling arising at the site of the TB test. This is because the swelling continues to increase for the first 48 hours & that is how this test has been standardized. Please make sure that you do not get your test done on a thursday, so the 48 hours time point won't come over a weekend. ...Read more
3-5 days: The peak reaction usually occurs in the first 2-3 days. Most will resolve within 5 days. This can vary depending on the size of the initial reaction. ...Read more
Not frequently: Unless you are exposed in your job or it is needed for your job. Some health care workers get it yearly. ...Read more
Seek out information: Most will be followed first with a chest x-ray looking for active pulmonary disease. If negative, you are likely started on one TB drug, depending on your local as treatment for latent (quiet) tb. If you are found to have active tb, you are likely started on a 4 drug program that lasts for up to a year to knock it out. Get with your doc to see. ...Read more
Great: Nothing to worry about.Get a more detailed answer ›
No: Fortunately not or we would not be able to perform this test on more than one occasion. ...Read more
Tuberculin test: If you need both physical examination and a tuberculin test, go to a primary carea provider. ...Read more
Positive PPD: A positive TB skin test should be followed up with a chest xray. If both are positive for findings, one should be treated and followed by an infectious disease specialist and take medications. False positive skin tests can occur if previously vaccinated against TBor infected with TB-like organisms. Improper technique or interpretation of reaction are other causes of false positives. ...Read more
It does mean your have been exposed and will need treatment to prevent it from worsening TB is a very slow growing germ...
I would also suggest consulting a chinese medicine practitioner as many herbs are very helpful in helping the body heal itself.... ...Read more
Not necessarily: (+) PPD means that you have been exposed to the TB agent. It doesn't say when. So if you had the TB in the past, it still will be (+) because your body "remembers" from the previous exposure. The greatest risk is if the TB agents are latent in your body, that's why everyone with a (+) PPD will have either a complete treatment with 4 medications or a mild one with only one. Your PPD will remain (+). ...Read more
Yes: Exception will be the ones who had a latent TB and received a prophylactic inh treatment for 9 months. Their reaction to tuberculin test can become negative. ...Read more
Skin test: It is a liquid (purified protein derivative) that is injected under the skin on the forearm (the ventral side or underside of the forearm) as a bleb that goes away. It tests to see if you were exposed to tb. When it is positive there is an indurated (raised and red) reaction bigger than a dime. It has to be read 2 days after it is done. ...Read more
Blood test: There is both a skin test and a blood test for tb. ...Read more
Probably OK: Unless it is a big scratch leading to a large hematoma, it is unlikely that it would affect the skin test reading at 48 hrs. ...Read more
True of false: This could be a true or false positive, and your doc should sort that out. People can be exposed to TB in the activities of their daily lives, and pick up a latent TB. In med school it was common for students to convert from - to + over a their time in training. You will need more testing, an may or may not need meds. ...Read more