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TB Testing - The Differences Between QuantiFERON Gold, QuantiFERON Gold Plus and PPD Skin Testing

The two standards for TB testing include a blood draw or skin test. Currently, the gold standard for blood drawn TB testing is a test called QuantiFERON Gold Plus... QuantiFERON Gold Plus is the new, improved version of the QuantiFERON Gold TB test. This is the same test with the same fundamental principles, but is more advanced at detecting TB. The Gold Plus test has been optimized in such an innovative way with the TB-specific antigens that elicit CD8 and CD4 T cell responses. This allows for a more accurate, comprehensive assessment of any cell-mediated immune responses to TB infection. This test is over 97% accurate at detecting a TB infection. Since this is a blood draw, there is no need…

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Articles of Interest

Accuracy of QuantiFERON-TB Gold Test for Tuberculosis Diagnosis in Children

In conclusion, the present study indicates that even young children are able to respond to specific M. tuberculosis antigens and mitogen, providing support for using the QFT-IT assay also in young children, particularly those evaluated for LTBI.

Comparing QuantiFERON-TB Gold Plus with Other Tests To Diagnose Mycobacterium tuberculosis Infection

The fourth-generation QuantiFERON test for tuberculosis infection, QuantiFERON-TB Gold Plus (QFT-Plus) has replaced the earlier version, QuantiFERON-TB Gold In-Tube (QFT-GIT). A clinical need exists for information about agreement between QFT-Plus and other tests. We conducted this study to assess agreement of test results for QFT-Plus with those of QuantiFERON-TB Gold In-Tube (QFT-GIT), T-SPOT.TB (T-SPOT), and the tuberculin skin test (TST).

Everything You Should Know About QuantiFERON-TB Test

QuantiFERON-TB test is the widely recommended revolutionary assessment for tuberculosis. This cutting-edge technology is a great option for people who need to be tested quickly and accurately. Any adult or child who responds positively to the QuantiFERON test (QFT) should be tested for tuberculosis symptoms. A chest x-ray may also be necessary. Latent tuberculosis (TB) is found in individuals who do not exhibit symptoms of tuberculosis (TB), have a normal chest x-ray, and have a positive QuantiFERON test (QFT).

Gold Test - Interferon Gamma Release Assay

QuantiFERON-TB Gold Plus (QFT-Plus) is a major scientific advance over the 100-year-old TB skin test (TST), providing greater accuracy and a more reliable result in a single patient visit.

I have a positive test for Tuberculosis

If the blood test is positive and your chest x-ray is clear, this indicates you have probably been exposed to TB in the past. TB germs can live in your body for long periods of time without making you sick. This is called latent (sleeping) TB. You cannot pass these sleeping germs on to anyone else.

Quantiferon TB Gold Test Result Interpretation

The QuantiFERON TB Gold test was approved by the Food and Drug Administration in 2011 and functions as an alternative to a one-step or two-step TB Skin Test (TST). It does not distinguish between active and inactive tuberculosis.

QuantiFERON-TB Gold+ for the Diagnosis of Mycobacterium tuberculosis Infection

QuantiFERON-TB Gold+ testing for the diagnosis of active or latent TB is easily interpreted and more specific than tuberculin skin testing in BCG-vaccinated populations. In environments with an easily accessible laboratory, it may be a preferred option for diagnosing latent TB. Joint clinical practice guidelines from the American Thoracic Society, Infectious Diseases Society of America, and the Centers for Disease Control and Prevention recommend IGRA over tuberculin skin testing when latent TB screening is warranted in patients five years or older who are at low to intermediate risk of progression to active TB or who have a history of BCG vaccination.

QuantiFERON-TB Gold+ for the Diagnosis of Mycobacterium tuberculosis Infection

QuantiFERON-TB Gold+ is a blood test used for the diagnosis of infection with Mycobacterium tuberculosis complex organisms (M. tuberculosis, M. bovis, M. africanum). It is used as an alternative to tuberculin skin testing for latent tuberculosis (TB). QuantiFERON-TB Gold+ is known as an interferon-gamma release assay (IGRA) because M. tuberculosis peptide antigens stimulate the release of interferon-gamma from the T cells of patients with the infection. It is the next generation of QuantiFERON IGRA testing. The previous generation is called QuantiFERON-TB Gold or QuantiFERON-TB Gold In-tube. Results of the blood test may be negative, positive, or indeterminate. A positive test result does not distinguish between active and latent TB.

QuantiFERON®-TB Gold In-Tube Test Fact Sheet

QuantiFERON®-TB Gold In-Tube (QFT) is a FDA-approved, blood test to detect tuberculosis (TB) infection. It is a better test than the tuberculin skin test (TST), particularly in people who have received the Bacillus Calmette-Guérin (BCG) vaccine

Understanding the QuantiFERON-TB Gold Test: A Simple Guide

The QuantiFERON test is really useful for spotting TB that isn’t showing any symptoms yet – a sneaky version of the disease that can turn active and make you sick years later. The test is very accurate and will give you a positive or negative result. Indeterminate or in-between results are rare.

What is the QuantiFERON-TB Gold Test?

In plain language, the QuantiFERON-TB Gold Test is a blood test... that helps doctors figure out if you have TB. In technical terms it's sometimes called an IGRA test (Interferon-Gamma Release Assay). It’s more advanced and faster than the old skin test method and doesn’t get mixed up with the TB vaccination, making the results more reliable.

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QuantiFERON-TB Gold

QFT is highly specific and sensitive: a positive result is strongly predictive of true infection with M. tuberculosis. However, like the TST and other IGRAs, QFT cannot distinguish between active tuberculosis disease and latent tuberculosis infection, and is intended for use with risk assessment, radiography, and other medical and diagnostic evaluations. Like any diagnostic aid, QFT cannot replace clinical judgment.