California
TB Gold Blood Test in California
The TB Gold blood test, also called QuantiFERON, uses a blood sample to check for tuberculosis infection by measuring the immune response to TB proteins. It can detect latent or active infection without a skin test.
Order TB Gold Blood Test in California
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order TB Gold Blood Test- Typical turnaround
- 1-3 business days
- Starting price
- From $199
- Results
- Confidential, online
Quick answer
The TB Gold blood test, commonly known as QuantiFERON, checks whether a person has been infected with the bacteria that cause tuberculosis. It works by measuring the immune system's response to specific TB proteins in a blood sample. Unlike a skin test, it needs only one visit and no second reading. Results help clinicians evaluate latent or active TB infection.
What this test measures
Tuberculosis is caused by Mycobacterium tuberculosis, a bacterium that usually affects the lungs and can remain inactive for years. The QuantiFERON assay measures interferon-gamma released by white blood cells when they encounter TB-specific antigens. This immune response indicates prior exposure to the bacterium. Clinicians use the result alongside symptoms, imaging, and other tests when evaluating possible latent or active infection.
The sample is whole blood collected into specialized tubes that contain TB antigens, a negative control, and a positive control. After incubation, the laboratory measures interferon-gamma in the plasma. The assay targets antigens such as ESAT-6 and CFP-10, which are absent from most BCG vaccine strains and from many non-tuberculous mycobacteria, which improves specificity compared with older skin testing.
The test is often requested for people who have had close contact with someone with active TB, for healthcare and congregate-setting workers, for people starting certain biologic treatments, and for those born or living in regions where TB is more common. It is a screening tool and does not by itself confirm active disease, so a qualified healthcare provider interprets it with the full clinical picture.
TB Gold Blood Test in California cities
Acalanes Ridge, CA
TB Gold Blood Test in Acalanes Ridge.
Acton, CA
TB Gold Blood Test in Acton.
Adelanto, CA
TB Gold Blood Test in Adelanto.
Agoura Hills, CA
TB Gold Blood Test in Agoura Hills.
Agua Dulce, CA
TB Gold Blood Test in Agua Dulce.
Ahwahnee, CA
TB Gold Blood Test in Ahwahnee.
Airport, CA
TB Gold Blood Test in Airport.
Alameda, CA
TB Gold Blood Test in Alameda.
Alamo, CA
TB Gold Blood Test in Alamo.
Albany, CA
TB Gold Blood Test in Albany.
Alhambra, CA
TB Gold Blood Test in Alhambra.
Aliso Viejo, CA
TB Gold Blood Test in Aliso Viejo.
Allendale, CA
TB Gold Blood Test in Allendale.
Alondra Park, CA
TB Gold Blood Test in Alondra Park.
Alpine, CA
TB Gold Blood Test in Alpine.
Alta Sierra, CA
TB Gold Blood Test in Alta Sierra.
Altadena, CA
TB Gold Blood Test in Altadena.
Alturas, CA
TB Gold Blood Test in Alturas.
Alum Rock, CA
TB Gold Blood Test in Alum Rock.
Amador Pines, CA
TB Gold Blood Test in Amador Pines.
American Canyon, CA
TB Gold Blood Test in American Canyon.
Amesti, CA
TB Gold Blood Test in Amesti.
Anaheim, CA
TB Gold Blood Test in Anaheim.
Anderson, CA
TB Gold Blood Test in Anderson.
Angels, CA
TB Gold Blood Test in Angels.
Angwin, CA
TB Gold Blood Test in Angwin.
Antelope, CA
TB Gold Blood Test in Antelope.
Antioch, CA
TB Gold Blood Test in Antioch.
Anza, CA
TB Gold Blood Test in Anza.
Apple Valley, CA
TB Gold Blood Test in Apple Valley.
Frequently Asked Questions
Where can I get a tb gold blood test in California?
California has certified laboratories and independent diagnostic centers that offer this panel. Direct-access ordering lets you select a location that fits your schedule.
How much does a tb gold blood test cost in California?
Pricing varies by provider and location. Check the price shown at checkout, and contact the testing partner for a written estimate if needed.
Is at-home collection available in California?
For select panels, at-home kits can be shipped to California, collected at home, and mailed back for analysis.
How long do results take in California?
Most results are reported within 1-3 business days after collection.
Ready to get tested?
Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.
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Every page on this site is reviewed for clarity, sourcing, and accuracy. We update our library as testing options, collection networks, and accreditation standards change.