Lab tests
TB blood test (interferon gamma, e.g. QuantiFERON) cost in California
TB blood test (interferon gamma, e.g. QuantiFERON) is a lab test. Many labs sell tests directly to the public for a flat cash price, often far below hospital prices.
Typical cash price
In California
From 285 hospital and 13 clinic prices in California.
Nationwide typical: $161 (most listed prices $44.40–$436).
Cheapest in California
- $8
Doctor fees are billed separately.
Source: Adventist Health Delano price file · checked Oct 2026 - $8
Doctor fees are billed separately.
Source: Ukiah Adventist Hospital price file · checked Oct 2026 - $8.22
Doctor fees are billed separately.
Source: Mercy San Juan Medical Center price file · checked Oct 2026 - $8.22
Doctor fees are billed separately.
Source: Woodland Memorial Hospital price file · checked Oct 2026 - Northridge Hospital Medical CenterTB blood test (interferon gamma, e.g. QuantiFERON)Facility fee only$8.37
Doctor fees are billed separately.
Source: Northridge Hospital Medical Center price file · checked Oct 2026 - $8.64
Doctor fees are billed separately.
Source: Methodist Hospital of Sacramento price file · checked Oct 2026 - $8.80
Doctor fees are billed separately.
Source: Rideout Memorial Hospital price file · checked Oct 2026 - St. Joseph's Medical Center StocktonTB blood test (interferon gamma, e.g. QuantiFERON)Facility fee only$8.82
Doctor fees are billed separately.
Source: St. Joseph's Medical Center Stockton price file · checked Oct 2026 - San Gabriel Valley Medical CenterTB blood test (interferon gamma, e.g. QuantiFERON)Facility fee only$9
Doctor fees are billed separately.
Source: San Gabriel Valley Medical Center price file · checked Oct 2026 - Glendale Memorial Hospital Health CenterTB blood test (interferon gamma, e.g. QuantiFERON)Facility fee only$9.78
Doctor fees are billed separately.
Source: Glendale Memorial Hospital Health Center price file · checked Oct 2026 - $9.99
Doctor fees are billed separately.
Source: St. Bernardine Medical Center price file · checked Oct 2026 - UCSF Benioff Children's Hospital OaklandTB blood test (interferon gamma, e.g. QuantiFERON)Facility fee only$10.50
Doctor fees are billed separately.
Source: UCSF Benioff Children's Hospital Oakland price file · checked Oct 2026
See all prices for TB blood test (interferon gamma, e.g. QuantiFERON)
Common questions
Do I need a doctor's order?
In most states, direct-to-consumer labs can sell many tests without a separate doctor visit. Some states and some tests still require an order.
Is the blood draw included?
Usually yes for lab stores and booking sites. Hospitals sometimes bill the draw (venipuncture) separately.
Why are prices so different?
Each hospital and clinic sets its own cash price. Hospitals publish prices because federal rules require it; clinics and booking sites set prices to compete. The same service can cost several times more at one place than at another nearby.
Can I pay cash if I have insurance?
Yes. You can choose to self-pay. A cash price is often lower than what you would pay before meeting your deductible. Cash payments may not count toward your deductible, so check with your plan. Our cash vs. insurance tool can help you decide.
What is a Good Faith Estimate?
If you are uninsured or paying cash, providers must give you a Good Faith Estimate of the cost on request. If your final bill is $400 or more above the estimate, you can dispute it.