QuantiFERON-TB Gold Blood Test (TB Blood Test for Work, School & Compliance)

The QuantiFERON-TB Gold Blood Test (QFT-Plus) is a fast, accurate, and FDA-approved blood test used to detect exposure to tuberculosis (TB). This modern TB screening method requires only one visit and delivers reliable results without the need to return for test reading—making it ideal for busy professionals and students.

At LabReqs.com, you can order your TB blood test online in minutes and visit a local lab the same day.

Why Choose a QuantiFERON TB Blood Test?

If you need TB testing for employment, school, or compliance, the QuantiFERON test offers clear advantages over the traditional TB skin test:

• ✅ Single visit required – no return appointment
• ✅ Highly accurate results
• ✅ Not affected by prior BCG vaccination
• ✅ No false positives from most non-TB exposures
• ✅ Convenient blood draw at a local lab

According to the Centers for Disease Control and Prevention, blood-based TB tests provide improved specificity and greater convenience compared to skin testing.

Who Needs a TB Blood Test?

This test is commonly required for:

• Healthcare workers and hospital employees
• Vendors and contractors needing compliance (RepTrax, Vendormate, etc.)
• Nursing, medical, and allied health students
• Pre-employment health screenings
• Individuals with prior TB skin test reactions

If you’re searching for a “TB test near me”, LabReqs makes the process simple—order online and complete testing at a nearby lab location.

Previously Tested Positive on a TB Skin Test?

If you’ve had a positive TB skin test (PPD) in the past, the QuantiFERON blood test is often the preferred next step.

Unlike the skin test, this blood test:

• Is not affected by BCG vaccination
• Helps reduce unnecessary follow-up imaging
• Provides a more specific immune response measurement

Many employers and healthcare systems accept this test as part of compliance documentation.

Understanding Your TB Test Results

Your QuantiFERON-TB test results will fall into one of three categories:

• Negative Result:
  TB infection is unlikely. Most individuals will not require further testing.
• Positive Result:
  Suggests TB exposure. A chest X-ray and clinical evaluation may be required to rule out active TB.
• Indeterminate Result:
  Inconclusive. A repeat test may be recommended.

👉 Important: Always follow the guidance of your employer, school, or healthcare provider regarding next steps.

What If My Result is Indeterminate?

Indeterminate results are rare but can occur due to individual immune response factors. If this happens:

• A repeat blood test may be required
• Results cannot be used for compliance until confirmed

Please note: repeat testing may require a new order.

Live Vaccines & TB Blood Testing

Recent live vaccinations can temporarily affect test accuracy.

If you’ve received vaccines such as:

• MMR (measles, mumps, rubella)
• Varicella (chickenpox)
• Yellow fever

You should:

• Test on the same day as vaccination, or
• Wait at least 4 weeks before testing

This helps prevent false-negative results.