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The Tuberculosis (TB) Screening Test helps detect active or latent TB infections early, ensuring timely treatment and prevention. This test is crucial for individuals at higher risk or showing symptoms of TB. In this guide, learn about the cost, procedure, normal range, and potential risks associated with TB screening.
What is the Tuberculosis Screening Test?
A TB screening test determines if you are infected with the bacteria that cause tuberculosis, known as Mycobacterium tuberculosis. A bacterial illness called tuberculosis mainly affects the lungs. However, it can also affect the kidneys, spine, and brain, among other parts of the body. When a person with TB sneezes or coughs, the infection can be transferred to another person.
Why is the Tuberculosis Screening Test Done?
A TB screening test determines if you are infected with TB bacteria. However, it cannot determine if you have an active or latent TB infection. You'll need further tests to determine which form of TB you have if a TB screening test reveals TB bacteria, so that you can receive the proper treatment.
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In case you get exposed to someone who has an active TB illness or you are at high risk of getting it, you would require a TB skin test or a TB blood test.
You would require a TB screening test if you have symptoms of TB disease, such as:
- A cough lasting longer than 3 weeks
- Chest pain
- Coughing up blood
- Night sweats (heavy sweating during sleep)
- Losing weight suddenly
- Loss of appetite
- Weakness
- Fatigue
You may need a TB screening test if you have a certain health condition that increases your risk of developing active TB disease. These conditions are:
Who Should Take the Tuberculosis Screening Test?
You are at an increased risk of exposure if:
- You are a healthcare worker
- You work or live in a place where TB is more common.
- You were born in a country or often travel to places where TB disease is common.
How Should I Prepare for the Tuberculosis Screening Test?
Preparing for a Tuberculosis Screening is simple, as no special steps are needed for either the TB skin test or the TB blood test. However, understanding the process can ease any anxiety about the test.
- Stay informed about test outcomes, such as a positive or negative TB Test, to plan your next steps.
- Share your vaccination history, including the TB Vaccine, with your healthcare provider.
- Discuss symptoms or risk factors for TB infection with your doctor to ensure accurate results.
What Type of Sample is Collected for the Tuberculosis Screening Test and How?
For a blood test: A healthcare provider will draw blood using a tiny needle from a vein in your arm. A small amount of blood will be collected into a test tube or vial once the needle is in place.
For a skin test: A small amount of fluid (tuberculin) will be injected beneath your skin in the bottom portion of your arm using a tiny needle. This fluid contains a protein derived from the bacterium that causes TB.
Are There Other Ways to Collect the Sample for the Tuberculosis Screening Test?
No, there are no alternate methods for collecting the sample. TB screening is done either via a skin test (injected fluid) or a blood draw.
How is the Tuberculosis Screening Test Performed?
For skin test: You will require two visits. First visit:
- A healthcare provider injects a small amount of tuberculin fluid under the skin on your forearm.
- A small lump will appear where the fluid was injected.
- Do not touch or apply lotion to the area. Keep it dry (it's okay if it gets wet). You may use an ice cube or a cold cloth to relieve itching.
Second visit (2-3 days later):
- A healthcare provider will check the site for any reaction, such as a bump, and measure it.
- The size and your risk factors will determine whether the result is positive.
For blood test (IGRA):
- A needle is inserted into your arm to collect blood.
- It may feel like a pinch, but it takes only a few minutes.
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How Long Does the Tuberculosis Screening Test Take?
Sample collection for the skin test takes just a few minutes, but you need to return in 2-3 days for the results. A blood test takes a few minutes, and results can be ready within a day or two.
When Will I Get My Tuberculosis Screening Test Results?
You will usually receive your Tuberculosis Screening Test results within 12 to 24 hours, depending on the lab's processing time. Reports are sent directly to you via WhatsApp or as a printed copy. Once you have your results, our doctor will explain them and guide you on the next steps, if needed.
How Do I Understand My Tuberculosis Screening Test Results?
- A positive result means you have contracted the TB bacterium. Additional tests (like chest X-ray or sputum culture) are needed to determine if it's active or latent TB.
- A negative result means there is no sign of TB infection, unless you were tested too early after exposure, have HIV, or other health concerns that could affect the test.
- A borderline blood test may mean retesting is needed.
What Should I Do After Getting My Tuberculosis Screening Test Results?
If your test is positive, follow up with further testing to confirm whether the infection is active or latent. Treatment with antibiotics is required for both forms to prevent complications or spread.
Are There Any Risks or Side Effects of the Tuberculosis Screening Test?
A skin or blood test for TB has no risk.
- You may feel a pinch during the injection or blood draw.
- Some mild pain or bruising can occur, but it usually goes away quickly.
Is the Tuberculosis Screening Test Painful?
No, it is not painful. You may feel a slight pinch or sting, but discomfort is minimal and temporary.
What are the Factors Affecting Tuberculosis Screening Test Cost?
Cost depends on factors like:
- Type of lab or diagnostic center
- City or location
- Whether the test is a skin or blood test
- Additional services like home sample collection or follow-up consultation
How Much Does the Tuberculosis Screening Test Cost in India?
The cost is approximately Rs. 2,000, depending on the location, type of test (skin or blood), and the lab. Prices may vary slightly by city or provider.
City-wise Price Table for Tuberculosis Screening Test
| City/Location | TB Screening Test Cost (INR) |
| Hyderabad | Rs.2000 |
| Chandanagar | Rs.2000 |
| Karimnagar | Rs.2000 |
| Nizamabad | Rs.2000 |
| Warangal | Rs.2000 |
| Visakhapatnam | Rs.2000 |
| Srikakulam | Rs.2000 |
| Kakinada | Rs.2000 |
| Kurnool | Rs.2000 |
| Nellore | Rs.2000 |
| Vizianagaram | Rs.2000 |
| Navi Mumbai | Rs.2000 |
| Nashik | Rs.2000 |
| Chh. Sambhajinagar | Rs.2000 |
| Pune | Rs.2000 |
| Sangamner | Rs.2000 |
| Bangalore | Rs.2000 |
Note: The cost of the Tuberculosis Screening Test may vary based on location and other factors. Please confirm the exact price by contacting us through our booking enquiry at 040 68334455.
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Frequently Asked Questions
There are two types of TB tests - TB skin tests and TB blood tests used to find TB germs in the body.
A TB blood test is more reliable and accurate than a TB skin test. It can detect latent or active TB infections and is less prone to false-positive results.
During the TB bacteria skin test, you may feel a slight pinch; during the TB blood test, you may feel little pain when the needle is injected.
The symptoms of TB disease are weakness, weight loss, fever, night sweats, coughing, chest pain, and coughing up blood.
The morning before your TB screening, consume a good breakfast and lots of water. Drinking enough water will keep you well hydrated as a result; it will make the blood test easier.
After a TB test, do not scratch the skin of the test area, apply a bandage at the test site, or expose the test area to water for 48 to 72 hours.
Yes, sometimes TB tests can result in false positives. Even if a person is not infected with M. tuberculosis, they may still react to the TST. These false-positive responses can be due to various reasons.
TB screening cost in India is approximately Rs. 2000, however, it might vary depending on factors like place, hospital, etc.
