What is a Quantiferon TB Blood Test?
The Quantiferon TB Blood Test is an FDA-approved blood test that screens for prior exposure to tuberculosis.
Why is the Quantiferon TB Blood Test important?
The Quantiferon-TB Gold Test is a new alternative to the skin test. The test requires a single blood draw and can be done at the same time as other blood tests. It is a great alternative for people who test positive on the skin test but do not suspect they have active tuberculosis and want to avoid a chest x-ray.
Who gets the Quantiferon TB Blood Test?
The QuantiFERON TB Blood Test is ordered by students working in healthcare settings, employees of healthcare companies who need to meet hospital, RepTrax, and Vendormate compliance requirements, and people who are simply interested.
What if I tested positive to a TB skin test previously?
The Quantiferon TB Blood Test is useful for people who have tested positively on a TB skin test. Rather than getting a chest x-ray, you can use this test to differentiate between a false positive and a false negative skin test.
What do my Quantiferon TB Blood Test results mean?
A positive or indeterminate result typically means that you will need to get a chest x-ray to confirm that you do not have active tuberculosis. A negative result typically means that you will not need further imaging. To be sure, we recommend contacting the person or organization asking for the test.
If my QuantiFERON TB Blood Test is indeterminate, should I get another test?
Indeterminate results are highly infrequent but do occur. They occur even though the specimen has been handled properly. Unfortunately, we do not provide a free redraw if your result is indeterminate and you desire to get tested again.
Does every lab location perform the QuantiFERON TB Blood Test?
Most locations perform this test, but we do recommend that you contact your selected lab to confirm testing hours. Results typically take 3-4 days from the time the lab receives specimen from collection site.(typically 4-5 business days after collection)
An alternative to the tuberculin skin test (TST)
The QuantiFERON®-TB Gold In-Tube (QFT-G) is a blood test for use as an aid in diagnosing Mycobacterium tuberculosis infection (both latent tuberculosis infection and active tuberculosis disease).3 The test is approved by the U.S. Food and Drug Administration (FDA) for use with adult patients.
CDC Statement: "The greater specificity of the Quantiferon test and the requirement for only one visit are compelling advantages."