Quest Diagnostics Tuberculosis Blood Test
Type
Blood Testing
Biomarkers
1
Duration
30 min
Results
3 days
This QuantiFERON TB test detects immune response to tuberculosis bacteria (Mycobacterium tuberculosis) in your body.
It’s intended for those who have been exposed to TB, have a high risk for contracting TB, or require evidence of a negative TB test result. This is an Interferon-Gamma Release Assay (IGRA) TB blood test that detects the immune system’s response to tuberculosis bacteria (Mycobacterium tuberculosis attack the lungs but can also attack any part of the body (eg, spine, kidneys, brain). Not all TB bacteria infections result in sickness. As a result, two TB-related conditions exist: latent TB infection (LTBI) and TB disease. If not treated properly, TB disease can be fatal. With Quest, you can buy a TB blood test online and get testing at a nearby location – no doctor’s visit required.
Key Details
- Sample Type
- Blood draw
- Turnaround
- 1–5 business days
- Common Use
- Targeted health screening
Who Is This For?
Anyone wanting to check specific health markers. People monitoring known conditions or treatment effectiveness. Those who want targeted testing rather than a comprehensive panel. Individuals following up on previous abnormal results or investigating specific symptoms.
What's Included
Preparation Required
Fasting for 10–12 hours before your appointment is recommended for accurate results (water is fine). Avoid alcohol for 24 hours and intense exercise for 12 hours before the blood draw. Morning appointments are ideal for consistent hormone and glucose readings. The blood draw typically takes 5–10 minutes.
Biomarkers Tested
1Measures the cell-mediated immune (CMI) response to T-cells to detect Mycobacterium tuberculosis bacteria. Does not differentiate between latent TB infection and TB disease.
Includes a $6.00 Physician Service Fee. Klarna/Affirm payment options available.
- Category
- Diagnostic
- Sample Type
- Blood draw
- Duration
- 30 min
- Results
- 3 days