New England · TB Gold Blood Test – QuantiFERON Tuberculosis Lab Test

TB Gold Blood Test – QuantiFERON Tuberculosis Lab Test in Connecticut

Below is a plain-language overview of the tb gold blood test – quantiferon tuberculosis lab test. This blood test helps detect the presence of tuberculosis (TB) infection.

Typical turnaround1-3 business days

Price range$199

PreparationFollow the lab's instructions.

Sample typeBlood draw at a collection lab

ReferralNo referral required

What this test is

The QuantiFERON® TB Gold test is a blood test used to help determine if a person has been infected with the bacteria that causes tuberculosis. It measures the body's immune response to TB bacteria.

What it measures

Interferon-gamma (IFN-γ) — reflects the immune system's response to TB bacteria

What the test involves

This test requires a standard blood draw from a vein in your arm. The collected blood is then sent to the laboratory for analysis.

Why it is often ordered

A clinician may order this test if they suspect exposure to or infection with tuberculosis. It is often used as an alternative to the TB skin test.

Preparation

Follow the specific preparation instructions provided by the laboratory. Generally, no special preparation is needed before the blood draw.

How results are reported

Results are typically available within a few business days and will be sent to your ordering clinician. Reference ranges can vary between laboratories.

Before you go

How to prepare for the blood draw
When results will be available
How to get your results

Cities

TB Gold Blood Test – QuantiFERON Tuberculosis Lab Test in Connecticut communities

Choose your city for local context and to request this test.