Hospital Lab
$350
cash pay
Other Labs
$149
+ lab fees
TestWell
$91.99
+ $6 lab fee
The QuantiFERON-TB Gold Plus blood test measures your immune response to Mycobacterium tuberculosis. Unlike the traditional skin test, it requires only one visit, is not affected by prior BCG vaccination, and has fewer false positives. It's required for many employment, school, and immigration purposes. A positive result indicates TB exposure but does not distinguish between latent and active TB infection.
Interferon Gamma Release Assay (IGRA) — modern blood-based tuberculosis test. More specific than the older skin test (TST/PPD) because it isn't affected by prior BCG vaccination.
Healthcare workers (annual screening), anyone starting biologic medications (TNF-alpha inhibitors, JAK inhibitors), recent immigrants from high-TB-prevalence countries, anyone with known TB exposure, school/employment requirements.
Sample Type
Blood draw
Fasting
Not required
Results In
3–5 business days
Performed At
Quest or Labcorp
1 biomarker tested
Your Tuberculosis (TB) Blood Test results will include values for each of the 1 biomarker tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 3–5 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you.
Your Tuberculosis (TB) Blood Test results will include values for each of the 1 biomarker tested, along with reference ranges. Results are reviewed by a licensed physician before being released to your secure portal.
If any values fall outside the normal range, your report will include guidance on what that may mean and recommended next steps. You'll receive an email notification when your results are ready, typically within 3–5 business days.
Typical reference range layout
Lab reports show where your value sits relative to established reference intervals—your physician interprets this in context for you.
No fasting required. Sample must be processed within 16 hours of collection.
No fasting required. Sample must be processed within 16 hours of collection.
TestWell Price
$91.99
+ $6 lab processing fee at checkout
No insurance needed · HIPAA compliant
Frequently ordered together
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Tuberculosis (TB) Blood Test
$91.99