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Understanding TB Tests: 1-Step, 2-Step, and QuantiFERON-TB Gold


Quick Test Health Services picture of gold lung for TB Screenings.
TB Screening with Quick Test Health Services

If you’ve been told you need a TB test, you might be wondering what it is, why you need it, and what your options are. At Quick Test Health Services in Mesa, AZ, we’re here to help you understand everything about TB testing. Whether you need a 1-step TB test, a 2-step TB test, or the QuantiFERON-TB Gold test, we’ve got you covered. Let’s break it all down in simple terms so you can feel confident about your next steps.


What is TB?

TB stands for tuberculosis, a serious disease that usually affects the lungs. It spreads through the air when someone with TB coughs, sneezes, or talks. While TB isn’t as common as it used to be, it’s still important to get tested if you’re at risk. That’s where TB screenings come in.


Who Needs a TB Test?


Not everyone needs a TB test, but certain people should get tested to stay safe. Here are some examples:

  • Healthcare Workers: If you work in a hospital, clinic, or nursing home, you might need regular TB tests.

  • Teachers and School Staff: Schools often require TB tests to protect students and staff.

  • Travelers: If you’ve visited a country where TB is common, you might need a test.

  • People with Weak Immune Systems: If you have HIV, diabetes, or another condition that weakens your immune system, you’re at higher risk for TB.

  • Close Contacts: If you’ve been around someone with TB, you should get tested.

If you’re in Mesa, AZ, and think you might need a TB test, Quick Test Health Services is here to help. We offer TB screenings that are fast, accurate, and convenient.


Types of TB Tests

There are three main types of TB tests:

  1. 1-Step TB Test

  2. 2-Step TB Test

  3. QuantiFERON-TB Gold Test

Let’s talk about each one and how they work.


1. 1-Step TB Test

The 1-step TB test is the simplest option. Here’s how it works:

  1. A small amount of fluid (called tuberculin) is injected under the skin on your arm.

  2. You’ll need to come back in 48–72 hours to have a healthcare professional check the injection site.

  3. If a bump forms, it means you might have been exposed to TB.

Who is it for?

  • People who need a quick, simple test.

  • First-time testers who haven’t had a TB test before.

Pros:

  • Quick and easy.

  • Only one visit for the injection (but you’ll need to return for the reading).

Cons:

  • You have to come back for the results.

  • It can’t tell the difference between a past TB infection and a current one.

2. 2-Step TB Test

The 2-step TB test is a bit more involved. Here’s how it works:

  1. You get the first tuberculin injection and come back in 48–72 hours for the reading.

  2. If the first test is negative, you’ll get a second injection 1–3 weeks later.

  3. You’ll come back again in 48–72 hours for the second reading.

Who is it for?

  • People who need TB testing for work (like healthcare workers).

  • Anyone who hasn’t had a TB test in the last year.

Pros:

  • More accurate for people who need regular TB tests.

  • Helps rule out false negatives.

Cons:

  • Requires two visits for injections and two more for readings.

  • Takes longer than the 1-step test.

3. QuantiFERON-TB Gold Test

The QuantiFERON-TB Gold test is a newer, more advanced option. Here’s how it works:

  1. A small blood sample is taken (just one quick blood draw!).

  2. The blood is sent to a lab to check for TB bacteria.

  3. You’ll get your results in 24–48 hours.

Who is it for?

  • People who want fast, accurate results.

  • Anyone who doesn’t want to come back for a reading.

Pros:

  • No need to return for a reading—just one visit!

  • Results are ready in 1–2 days.

  • More accurate than skin tests.

Cons:

  • Requires a blood draw (some people don’t like needles).

  • Slightly more expensive than skin tests.

Which TB Test is Right for You?

The best test for you depends on your situation. Here’s a quick guide:

  • 1-Step TB Test: Great for first-time testers or people who need a simple, quick option.

  • 2-Step TB Test: Ideal for healthcare workers or anyone who needs regular TB tests.

  • QuantiFERON-TB Gold Test: Perfect for people who want fast, accurate results without multiple visits.

At Quick Test Health Services in Mesa, AZ, we offer all three options. Our team can help you choose the right test for your needs.

What Happens After Your TB Test?

Once you’ve had your TB test, here’s what to expect:

  1. Negative Result: If your test is negative, it means you probably don’t have TB. You might need another test in the future if you’re at risk.

  2. Positive Result: If your test is positive, it means you’ve been exposed to TB. Don’t worry—this doesn’t always mean you’re sick. You’ll need more tests (like a chest X-ray) to check for active TB.

  3. Follow-Up: If you have active TB, you’ll need treatment. TB is treatable with medicine, and most people recover completely.

Why Choose Quick Test Health Services for TB Testing in Mesa, AZ?

At Quick Test Health Services, we make TB testing easy and stress-free. Here’s why people in Mesa, AZ trust us:

  • Fast Results: Get your results in as little as 24 hours with the QuantiFERON-TB Gold test.

  • Walk-In Welcome: No appointment is needed—just stop by!

  • Expert Staff: Our team is friendly, professional, and here to help.

  • Affordable Prices: We offer competitive pricing for all our tests.

📍 Visit us at 7165 E. University Dr #155, Mesa, AZ 85207🌐 Learn more: www.quicktesthealthservices.com📞 Call us at 602-428-4557 to schedule your test today!

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