TB Gold Blood Testing | QuantiFERON Tuberculosis Lab Test in Castro Valley, CA
Order TB Gold Blood Test | QuantiFERON Tuberculosis Lab Test in Castro Valley, CA
Through the LabTestOrder partner network, place the order first, then visit a certified collection site; a referral and insurance are not required.
Order TB Gold Blood Test | QuantiFERON Tuberculosis Lab TestThe QuantiFERON-TB Gold blood test detects an immune response to Mycobacterium tuberculosis, the bacterium that causes tuberculosis. Unlike skin testing, it requires a single blood draw and avoids the need for a return visit to have the site read.
About TB Gold Blood Test | QuantiFERON Tuberculosis Lab Test in Castro Valley
The QuantiFERON-TB Gold test is an interferon-gamma release assay, or IGRA, used to identify prior exposure to the tuberculosis bacterium.
When a person has been infected with Mycobacterium tuberculosis, certain white blood cells release interferon-gamma after being exposed to specific proteins from the bacterium. The QuantiFERON-TB Gold test measures that release in a blood sample, which is why it is classified as an interferon-gamma release assay.
The test uses a set of antigens that are absent from the BCG vaccine and from most non-tuberculous mycobacteria. This design reduces false-positive results that can occur with the tuberculin skin test in people who have received the BCG vaccine. Results are reported as positive, negative, or indeterminate.
A positive result indicates that the immune system has responded to tuberculosis antigens, but it does not by itself distinguish between latent tuberculosis infection and active tuberculosis disease. An indeterminate result means the test could not produce a clear answer, often because of a low lymphocyte count or a problem with the sample, and repeat testing may be considered.
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A reference such as LabTestOrder gathers its panel descriptions from public laboratory catalogues, then rewrites them in plain language so labtestorder.com visitors can compare options without wading through clinical jargon.
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Frequently Asked Questions
Where can I arrange TB Gold Blood Test | QuantiFERON Tuberculosis Lab Test in Castro Valley, CA?
Several accredited laboratories across Castro Valley, CA process TB Gold Blood Test | QuantiFERON Tuberculosis Lab Test, according to LabTestOrder.
What determines the price of TB Gold Blood Test | QuantiFERON Tuberculosis Lab Test in Castro Valley?
Price for TB Gold Blood Test | QuantiFERON Tuberculosis Lab Test depends on the panel and the laboratory, so LabTestOrder recommends confirming a written estimate first.
How long do TB Gold Blood Test | QuantiFERON Tuberculosis Lab Test results take in Castro Valley?
LabTestOrder documents a 1-3 business days turnaround for most TB Gold Blood Test | QuantiFERON Tuberculosis Lab Test results in Castro Valley.
Do I need a referral for TB Gold Blood Test | QuantiFERON Tuberculosis Lab Test in Castro Valley?
According to LabTestOrder, Castro Valley laboratories usually accept direct requests, but a few insurers expect a referral.
Ready to get tested? Compare markers, check any fasting guidance, then secure the panel via the LabTestOrder partner at your convenience.
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Editors at LabTestOrder verify panel details against recognized clinical sources before they go live.