Maintaining a safe and compliant workplace is always a top priority. This is true for employers across varying industries. One of the most long-standing requirements in order to accomplish this
Maintaining a safe and compliant workplace is always a top priority. This is true for employers across varying industries. One of the most long-standing requirements in order to accomplish this is tuberculosis (TB) screening. However, even with its widespread use, many find a significant amount of questions and confusion when it comes to the procedure and what the results really mean. Below, we will break down the facts, answer FAQs, and debunk misconceptions pertaining to Purified Protein Derivative skin testing (PPD test).
As we begin the new year, staying on top of health protocols is more important than ever. At Soteria Screening Laboratories, our goal is to simplify your health protocols, making them as straightforward as possible.
The PPD test, often referred to as the Mantoux test, is made up of a two-step process. First, a healthcare professional will use a small needle to inject a small amount of TB protein into your arm. A raised bump at the injection site may indicate exposure to tuberculosis. The second step to this procedure requires you to return to a clinic 48-72 hours after receiving the injection to have it examined by a professional. Without completing the second step successfully, the test is considered invalid both legally and medically.
One of the most common misconceptions about the PPD TB test is that it is a vaccine. A PPD vaccine is rarely used; many confuse the test with the term vaccine. It is vital to understand that the PPD is strictly an evaluative tool. This tool is designed to identify previous exposure to the bacteria that cause tuberculosis. It offers no preventative benefits or immune protection against the disease.
Although the Bacille Calmette-Guérin (BCG) vaccine is used in many countries to prevent tuberculosis, it is not routinely administered in the United States. Furthermore, individuals who have received the BCG vaccine may have a false-positive result on a PPD skin test. This is why it is important to inform the healthcare professional administering the test about a prior BCG vaccination.
There are many common misconceptions when it comes to the PPD test, we will explain and address some of them.
Q: Does a positive PPD test result mean that I am currently sick and contagious?
A: Not necessarily. Receiving a positive test result indicates that you have been exposed to the bacteria that causes tuberculosis. It does not mean you definitely have the illness. This is often called Latent TB. When receiving a positive test result, further screening will be required to determine if you have the illness and are contagious.
Q: Does a negative test result 100% rule out a TB infection?
A: While a negative test result suggests no TB exposure the majority of the time, false negatives are uncommon but can occur in certain scenarios.
Q: Why do I have to wait exactly 48 to 72 hours for the test results?
A: The PPD test relies on delayed hypersensitivity reaction. This means that it takes time for your body to produce a reaction to the test to determine results.
Q: Can I get a PPD test if I’ve recently had a COVID-19 or Flu vaccine?
A: Yes. Although occasionally certain viruses can interfere with the test accuracy, it is best to wait until a virus is out of your system.
For many employees, the most stressful part is figuring out where to get their PPD testing done that aligns with their schedule. While some local health departments offer them, the two step process of the test can make scheduling difficult at traditional clinics.
At Soteria Screening, we specialize in making this process as seamless as possible for both individuals and high-volume employers. We offer professional, timely testing with clear documentation to ensure you stay compliant without the headache of delays or long wait times.
