How Long is a TB Test Good For? Your Questions Answered

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If you’re wondering how long a TB test is good for, you’re not alone. Many people are unsure about the duration of a TB test and whether they need to get tested again. In this blog post, we’ll answer your questions and provide information about how Nao Medical can assist with your healthcare needs.

How Long is a TB Test Good For?

The duration of a TB test depends on the type of test you receive. The two most common types of TB tests are the Mantoux tuberculin skin test and the TB blood test. The Mantoux test is valid for 12 months, while the TB blood test is valid for the duration of your lifetime.

Why Do I Need a TB Test?

A TB test is used to determine if you have been infected with the bacteria that causes tuberculosis. TB is a serious disease that can be fatal if left untreated. Getting tested is important for your health and the health of those around you.

How Can Nao Medical Help?

Nao Medical offers a range of healthcare services, including urgent care, primary care, mental health, women’s health, and nutrition services. We provide same-day appointments, minimal wait times, exceptional and empathetic staff, stunning clinic environments, a technologically driven approach with a comprehensive app, and extensive after-hours virtual care. Our approach extends beyond focusing solely on the immediate health issues patients present. We can assist with your TB testing needs and provide comprehensive care for all your healthcare needs.


Now that you know how long a TB test is good for and why it’s important to get tested, it’s time to take action. Contact Nao Medical today to schedule your TB test and learn more about our healthcare services. We’re here to help you stay healthy and feel your best.


  • How is a TB test performed? A TB test is typically performed by injecting a small amount of fluid (called tuberculin) into the skin of your forearm. You will need to return to the clinic within 48 to 72 hours to have the test read.
  • Is a TB test painful? The TB test is not painful, but you may experience some discomfort or itching at the injection site.
  • What happens if my TB test is positive? If your TB test is positive, you will need additional testing to determine if you have active TB disease. Treatment is available and can be highly effective if started early.

Click here to learn more about our 2-step PPD test and other healthcare services. For more information about TB testing, visit the CDC website.

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Disclaimer: The information presented in this article is intended for general informational purposes only and should not be considered, construed or interpreted as legal or professional advice, guidance or opinion.

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