TB Testing Near Me in Johnstonville, CA

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T-Spot I TB PPD Skin Test
QuantiFERON-TB Gold



TB Testing Locations in All Cities & States

Tuberculosis (TB) Testing Made Simple and Reliable

Lab Testing USA is proud to offer numerous TB testing locations across Johnstonville, CA and in virtually every major metropolitan area across all 50 states and Puerto Rico. Our team of certified professionals is equipped to handle TB testing for various needs such as work, education, or personal health. As a contagious bacterial infection, tuberculosis (TB) primarily impacts the lungs but has the potential to affect other parts of the body without prompt treatment. Early diagnosis is crucial for safeguarding your health and curbing the spread of the infection. With Lab Testing USA, your TB testing experience is streamlined, reliable, and accessible through our extensive nationwide network, same-day appointment options, and trusted certified labs. Whether you're looking for a TB skin test (PPD) or need a TB blood test like QuantiFERON-TB Gold or T-Spot for work, academics, immigration, or personal assurance, our expertly executed services deliver accurate outcomes with minimal inconvenience. Feel free to reach us at (800)441-2728 to locate the nearest TB testing center in Johnstonville, CA.

TB Testing Methods Available

TB PPD Skin Test

T-SPOT®TB Test

QuantiFERON Gold -TB Test

0 Alcohol-Test Centers in Johnstonville

What is a TB PPD Skin Test

The TB skin test is a traditional and widely used screening method. A small amount of purified protein derivative (tuberculin) is injected under the skin on the forearm

How it Works in Johnstonville, CA

  • Donor receives donor pass and proceeds for initial tuberculin injection
  • This test requires the donor to follow-up visit within 48–72 hours to have the results read
  • A trained healthcare professional examines the site for a reaction, which indicates potential TB infection
Schedule Your TB Online

What is a TB Skin Test Used For?

  • Routine screenings for schools, workplaces, and healthcare settings in Johnstonville, CA
  • Those, in Johnstonville, CA, requiring a low-cost, reliable initial screening method

What is a QuantiFERON Gold TB Test

The QuantiFERON Gold TB blood test s a modern blood test offering fast, accurate results without the need for multiple appointments. The QuantiFERON Tb Test is (often abbreviated as QFT or QFT-Plus in its latest version)

Key Advantages in Johnstonville, CA:

  • Performed in one visit- no return appointment required
  • Not affected by prior BCG vaccination, which can cause false positives in skin tests.
  • No risk of subjective reading differences or human error
Schedule Your QuantiFERON Gold Online


What is a QuantiFERON TB Test Used For?

  • Screening for TB infection in Johnstonville, CA workplaces (e.g., healthcare, schools, government).
  • Pre-employment testing in Johnstonville, CA
  • Johnstonville, CA Immigration, travel, or school requirements.
  • When accuracy is especially important (e.g., individuals vaccinated with BCG).

What is an T-SPOT®.TB Test

The T-SPOT®.TB test is an advanced, laboratory-based blood test that detects the presence of T cells responding to Mycobacterium tuberculosis antigens. This method captures interferon gamma (IFN-γ) released by immune cells when exposed to TB proteins, providing a highly sensitive and specific result. FDA-approved and widely used for detecting latent TB infection and supporting active TB evaluation.

Key Benefits in Johnstonville, CA

  • Aids in the diagnosis of latent and active TB infection
  • Useful when skin test results are unclear or affected by prior BCG vaccination
  • Performed in a single visit with results reviewed by certified labs

Schedule Your T-SPOT®.TB Test Online

What is a T SPOT TB Test Used For?

  • Johnstonville, CA Employment & Occupational Screening: Healthcare workers, teachers, government employees, and others in safety-sensitive positions often need TB clearance.
  • Johnstonville, CA Immigration / Visa Requirements: Many countries accept the T-SPOT.TB as proof of TB screening.
  • Johnstonville, CA School & University Enrollment: Students (especially in medical or childcare fields) may be required to take it.
  • Johnstonville, CA Medical Evaluation: Doctors may order it for patients with risk factors, immune system concerns, or a history of TB exposure.
  • When BCG Vaccine Has Been Given: Unlike the TB skin test, the T-SPOT.TB is not affected by prior BCG vaccination, which helps avoid false positives.



What is Tuberculosis?

Tuberculosis (TB) is an infectious disease caused by bacteria that spread through the air from person to person. While TB most commonly affects the lungs, it can also impact other areas of the body, including the brain, kidneys, and spine. Without proper treatment, TB can become life-threatening.

There are two main states: latent TB infection (you have TB bacteria in your body but no symptoms, non-infectious) and active TB disease (you have symptoms, can spread it)

Testing helps identify who has been exposed or infected, even if they are not yet sick, so they can get treatment if needed and prevent spread.

What happens if the test is positive or negative?

  • Positive results for a skin or blood test means you have likely been infected with the TB bacteria. This does not tell you if it is an active infection. To check for active TB, doctors will often order a TB chest x-ray and sputum test 
  • Negative results means that no evidence (by that test result) of infection. Sometimes this isn't perfect, for example, a very recent infection might not yet be detected, or immune suppression might reduce response.

What are the side effects of risks of TB tests?

  • Very minimal
  • Skin test-mild pain, redness, swelling at the injection site
  • Blood test- pain or bruising at needle site. Rare allergic reaction possible

How often should I be tested for TB?

This will depend on a person's risk factor. People who work in healthcare, live in high TB burden settings or have certain medical conditions might need regular testing. For most people, they only need to be tested when there is an immediate risk or exposure.


TB Testing Near Me in Johnstonville, CA

Tuberculosis (TB) Testing Made Simple and Reliable

Searching for a "TB test near me"? At Lab Testing USA, we make tuberculosis testing simple, fast, and affordable. Whether you need a TB skin test (PPD/Mantoux) or a TB blood test (QuantiFERON-TB Gold or T-Spot), we have nationwide locations with same-day appointments available.

Lab Testing USA Offers

  • Fast Turnaround: Most results available within 24–48 hours.
  • Nationwide Coverage: Thousands of testing centers across the U.S.
  • No Doctor's Visit Needed: Order your test online, visit the lab, and get results securely.
  • Affordable Pricing: Transparent rates with no hidden fees.

Whether for employment, school, healthcare clearance, or personal peace of mind, Lab Testing USA is your trusted partner for convenient TB testing anywhere in the United States.

Compare TB Tests: Skin Test vs. QuantiFERON-TB Gold vs. T-SPOT.TB

Choose the right test for employment, school, immigration, or routine screening. Nationwide labs, same-day appointments, fast results.

TB Skin Test (TST/PPD)

Two-step process with a return visit in 48–72 hours for reading.

  • Low cost, widely accepted
  • Requires return visit
  • BCG vaccine may cause false positives
Schedule TB Skin Test

QuantiFERON-TB Gold (IGRA)

Single-visit blood test; lab measures interferon-gamma release.

  • No return visit required
  • Unaffected by BCG vaccination
  • Lab-based; rapid turnaround
Schedule QuantiFERON

T-SPOT.TB (IGRA)

Single-visit blood test; counts TB-specific T-cell “spots.”

  • No return visit required
  • Unaffected by BCG vaccination
  • Useful when QFT is indeterminate
Schedule T-SPOT.TB

Frequently asked questions about TB Testing

1. Where can I get a TB test in Johnstonville, CA?

Answer: Lab Testing USA provides TB testing services throughout Johnstonville, CA, including major cities and rural locations. You can call (800)441-2728 to find a site near you.

2. What types of TB tests are available?

Answer: We offer both the TB skin test (PPD) and the QuantiFERON-TB Gold and T-Spot TB blood tests.

3. Why is TB testing necessary in Johnstonville, CA?

Answer: TB testing is crucial for early detection and prevention of the spread of tuberculosis, ensuring public health and safety.

4. How soon can I schedule a TB test in Johnstonville, CA?

Answer: Lab Testing USA offers same-day scheduling for TB tests. Contact us to arrange an appointment.

5. Is TB testing required for employment or school in Johnstonville, CA?

Answer: Yes, many employers and educational institutions require TB testing to ensure a safe and healthy environment.

6. How long does it take to receive TB test results?

Answer: Results from TB tests are generally available within a few days. Specific timelines depend on the type of test.

7. Are walk-in appointments available for TB testing?

Answer: While some locations may accommodate walk-ins, scheduling an appointment is recommended to reduce wait times.

8. What age groups should consider TB testing?

Answer: Individuals of all ages, especially those in high-risk groups or environments, should consider TB testing.


TB Testing in Johnstonville, CA

Johnstonville, California, is a small yet vibrant community nestled in Lassen County. With its scenic landscapes and friendly atmosphere, it presents a unique blend of rural charm and accessibility. The community is characterized by a variety of outdoor activities, such as hiking and fishing, making it a haven for nature enthusiasts.

The demographics of Johnstonville reflect a diverse population, contributing to a rich cultural tapestry. The community values education, with a focus on providing quality schooling options for children and youth. This commitment to learning is evident in the activities and programs offered by local schools and community centers.

Economically, Johnstonville relies on a mix of agriculture, small businesses, and tourism. This diverse economic base supports a stable job market, providing opportunities for residents and newcomers alike. The local government works diligently to foster an environment conducive to economic growth and sustainability.

When it comes to community life, Johnstonville offers a welcoming atmosphere with a strong sense of togetherness. Residents often participate in various community events and initiatives, fostering a tight-knit society that values cooperation and mutual respect.

The geographical location of Johnstonville offers residents the benefit of experiencing the natural beauty of Lassen County while still being in proximity to larger urban centers. This balance allows for a peaceful lifestyle with access to urban amenities.

Local infrastructure in Johnstonville supports a comfortable living environment with necessary services such as healthcare, transportation, and communication readily available. The community benefits from well-maintained roads, reliable public services, and a commitment to improving local amenities.

As a place where tradition meets progress, Johnstonville continues to thrive, adapting to the needs of its residents while preserving the essential qualities that make it a unique place to live. The combination of natural beauty, economic opportunity, and community spirit makes Johnstonville a desirable location for many.

(800) 441-2728