What happens if you have a positive QuantiFERON gold?

What happens if you have a positive QuantiFERON gold?

A “positive” TB blood test result means you probably have TB germs in your body. Most people with a positive TB blood test have latent TB infection. To be sure, your doctor will examine you and do a chest x-ray. You may need other tests to see if you have latent TB infection or active TB disease.

What is the difference between active and inactive TB?

People with latent TB do not have any symptoms and cannot spread TB. If they do not get treatment, however, they may develop active TB disease in the future, spread the disease to others, and feel quite ill. People with active TB disease can be treated and cured if they get medical help.

What is done if a patient has a positive reaction to a Mantoux test?

Most people with a positive TB skin test have latent TB infection. To be sure, your doctor will examine you and give you a chest x-ray. You may need other tests to see if you have active TB disease. Protect your health and the health of your family – get a TB skin test!

How do you read TB QuantiFERON?

How are QFT-Plus results interpreted?

1. Positive – suggests that TB infection is likely.
2. Negative – suggests that TB infection is unlikely.
3. Indeterminate – suggests the need for further investigations or repeat testing.

Does BCG vaccine make QuantiFERON positive?

Results: Among 100 adults who were BCG-vaccinated and had a positive TST result, 30 (30%) had a positive result using QFT-G. Persons from high-incidence countries were 8.2 times more likely to have a positive QFT-G result compared with persons from low-incidence countries (46% versus 9%).

What is the QuantiFERON®-TB Gold test?

On May 2, 2005, a new in vitro test, QuantiFERON®-TB Gold (QFT-G, Cellestis Limited, Carnegie, Victoria, Australia), received final approval from the U.S. Food and Drug Administration as an aid for diagnosing Mycobacterium tuberculosis infection.

What does an “indeterminate” result in Quantiferon Gold in-tube test for latent tuberculosis mean?

What does an “indeterminate” result in QuantiFERON Gold in-Tube test for latent tuberculosis really mean? An “ indeterminate” QuantiFeron Gold in-Tube (QFT-IT) simply means the result can’t be interpreted. It does NOT mean “intermediate” or “borderline positive”!

How are QFT results interpreted in the workup of tuberculosis (TB)?

Interpretation of QFT results (Table 2) is stratified by estimated risk for infection with M. tuberculosis, in a manner similar to that used for interpreting TST with different cut-off values. QFT results indicative of M. tuberculosis infection include the following three criteria: (mitogen — nil) and (tuberculin — nil) are both > 1.5 IU; and

What does an indeterminate QFT-it mean?

An “indeterminate” QuantiFeron Gold in-Tube (QFT-IT) simply means the result can’t be interpreted. It does NOT mean “intermediate” or “borderline positive”! Although there are several reasons for an indeterminate QFT-IT, a common explanation is an immunocompromised state involving inadequate T-cell response (eg, corticosteroids, HIV, cancer).