Tuberculosis (TB) remains one of the world’s most persistent infectious diseases, affecting millions every year. Despite major advancements in medicine, TB continues to pose a global health challenge, especially in low- and middle-income countries. Early detection is one of the most effective strategies to control its spread, and that’s where the tuberculosis blood test plays a vital role. Furthermore, in this blog, you will learn about the role of the tuberculosis blood test in global TB control, its growing popularity as a diagnostic method, and how it’s revolutionising the way we identify and manage this deadly disease.
Understanding Tuberculosis and Its Global Impact
Tuberculosis is caused by Mycobacterium tuberculosis, a bacterium that primarily attacks the lungs but can also affect other parts of the body, such as the kidneys, spine, or brain. The disease spreads through airborne droplets when an infected person coughs or sneezes.
According to the World Health Organisation (WHO), TB remains one of the top 10 causes of death worldwide. In 2023 alone, over 10 million people fell ill with TB, and 1.3 million died from it. Despite being preventable and treatable, TB continues to spread due to delayed diagnosis, limited healthcare access, and drug-resistant strains.
This is where innovations like the tuberculosis blood test have become crucial in speeding up diagnosis and preventing further transmission.
What Is a Tuberculosis Blood Test?
TB Blood Test (IGRA) in Leeds
A TB blood test is a simple, reliable way to see if you’ve been exposed to the bacteria that cause tuberculosis.
At Miracle Inside Diagnostic Scan Clinic, we use modern, clinically approved testing methods.
Our experienced team carries out the blood draw on-site, so there’s no need to visit another location.
This test is commonly requested for employment checks, healthcare screening, visa applications, or personal reassurance.
It’s widely used across the UK and accepted by employers and health organisations.
Medically, this test is known as an interferon-gamma release assay (IGRA). Despite the technical name, the process is straightforward. Only one blood sample is required,
with no follow-up appointments or return visits.
Why Many People Now Choose a TB Blood Test
The older Mantoux skin test requires two appointments and can give unclear results, particularly in people who have had the BCG vaccination, which is common in the UK.
TB blood tests avoid these issues. They are not affected by previous BCG vaccination and provide clear results from a single blood sample. This is why many clinics, employers, and clinicians now prefer TB blood testing.
How the TB Blood Test Works
If your body has ever been exposed to TB bacteria, your immune system remembers it. During testing, your blood is sent to an accredited laboratory and mixed with TB-specific proteins.
If your immune cells recognise these proteins, they release a substance called interferon-gamma.
The laboratory measures this response. A positive result means TB infection has occurred, even if you feel completely well. Further assessment may be needed to determine
whether the infection is active or latent.
TB Blood Tests Available at Miracle Inside
- QuantiFERON-TB Gold Plus (QFT-Plus)
This is the most commonly used TB blood test.
It is widely accepted for job screening, healthcare workers,
and visa or immigration requirements.
- T-SPOT.TB Test
This test is often recommended for individuals with weaker immune systems, as it remains accurate even when immune responses are reduced.
Both tests are clinically validated and used throughout the UK and internationally.
Who May Need a TB Blood Test
- TB screening for work, study, or visa applications
- Healthcare, care home, or childcare employment
- Close contact with someone diagnosed with TB
- Starting medication that affects the immune system
- Living in or travelling to regions where TB is more common
Phlebotomy Services at Miracle Inside
All blood samples are taken on-site by trained healthcare professionals in a clean, clinical environment. We focus on patient comfort, safety, and correct sample handling.
Appointments are quick, and most patients are in and out within a short time. Samples are sent directly to accredited laboratories for analysis.
Clinic Address
Miracle Inside Diagnostic Scan Clinic218A–218B Dewsbury Road
Hunslet, Leeds
LS11 6ER
United Kingdom
Why Choose Miracle Inside for Your TB Blood Test
- One appointment with no return visit required
- Results not affected by previous BCG vaccination
- Professional on-site phlebotomy services
- Accepted for work, visa, and clinical screening
- Clear, reliable results from accredited laboratories
If you need a TB blood test in Leeds, our team is here to help.
At Miracle Inside Diagnostic Scan Clinic, we provide safe,
efficient, and professional testing with patient care at the centre.
Advantages of the Tuberculosis Blood Test
The tuberculosis blood test offers several benefits that make it a game-changer in TB detection and control:
- Accurate and Reliable:
The test provides highly specific results and eliminates the false positives that often occur with the skin test, especially in people who have received the BCG vaccine. - Convenient and Quick:
Only one visit is required for the test, and the results are typically available within 24 hours, making it ideal for busy clinics or community testing programs. - No Reader Bias:
Unlike the skin test, where interpretation can vary, blood test results are standardised and lab-based, ensuring consistent accuracy. - Suitable for All Populations:
The test is effective even in immunocompromised individuals, including those living with HIV, where traditional tests may not perform well.
How the Tuberculosis Blood Test Supports Global TB Control?
The tuberculosis blood test has become a vital tool in the global strategy to eliminate TB. Here’s how it contributes to global control efforts:
- Early Detection and Prevention:
By identifying latent TB infections – cases where people are infected but not yet sick – the test helps prevent progression to an active disease and curbs transmission in communities. - Improved Screening Programmes:
Health organisations can implement mass screening in high-risk populations, such as healthcare workers, immigrants, and people living in close quarters, using a blood test for accurate results. - Enhancing Global TB Surveillance:
Consistent and rapid testing data help countries track infection trends, assess risk zones, and allocate healthcare resources more effectively. - Reducing Misdiagnosis:
With more precise testing, fewer individuals receive unnecessary treatment, and more resources can be directed to those who truly need it.
The Future of TB Diagnosis and Control
The fight against TB continues, but with tools like the Tuberculosis Blood Test, we are closer to the goal of a TB-free world. Advancements in diagnostics mean faster identification, earlier treatment, and better global coordination.
Public health organisations are now integrating blood-based testing into national TB programs, supporting WHO’s “End TB Strategy,” which aims to reduce TB deaths by 90% by 2035.
Final Thoughts
TB is not just a medical issue; it is a global health priority that demands innovation, awareness, and access. The tuberculosis blood test is a step forward in ensuring no one is left undiagnosed or untreated. At Miracle Inside, we believe that timely and accurate diagnostic testing is the key to healthier communities. By promoting awareness and accessibility of advanced TB tests, we can collectively contribute to a safer, healthier, and TB-free future.