Cvs Tuberculosis Test

2 min read 28-12-2024

A tuberculosis (TB) test is a crucial diagnostic tool for detecting latent or active TB infection. While several testing methods exist, the convenience of readily available testing options, like those offered at CVS, makes early detection more accessible. Let's break down what you should know about getting a TB test at CVS.

Types of TB Tests Offered at CVS

CVS pharmacies typically offer two primary types of TB tests:

1. The Tuberculin Skin Test (TST) or Mantoux Test:

This is an intradermal injection of tuberculin purified protein derivative (PPD) into the forearm. After 48-72 hours, a healthcare professional measures the resulting induration (hardening) at the injection site. A larger area of induration generally indicates a positive result, though interpretation requires considering factors like age, risk factors, and recent BCG vaccination. It's important to note that a positive TST doesn't automatically mean active TB; further testing is usually necessary.

2. The Interferon-Gamma Release Assays (IGRAs):

These blood tests, such as QuantiFERON-TB Gold Plus and T-SPOT.TB, detect interferon-gamma, a protein released by immune cells when exposed to TB antigens. IGRAs are considered more specific than the TST, meaning they are less likely to produce false-positive results from prior BCG vaccination. However, they can be more expensive.

Before Your CVS TB Test

Consult your doctor: It's always advisable to speak with your physician before undergoing any medical test. They can advise on which test is most appropriate for your specific circumstances and risk factors.
Gather your insurance information: Having your insurance card ready will simplify the billing process.
Understand the cost: While many insurance plans cover TB testing, be aware of any potential out-of-pocket expenses.

After Your CVS TB Test

Follow instructions carefully: The healthcare professional administering the test will provide specific instructions regarding follow-up, particularly for the TST.
Schedule a follow-up appointment (if necessary): If your test results are positive or inconclusive, further evaluation and testing are essential. This typically involves a chest X-ray and possibly sputum culture to confirm active TB disease.
Understand your results: Don't hesitate to ask questions if you don't understand the results or what they mean for your health.

Important Considerations

Accuracy: While both TST and IGRA tests are generally reliable, neither is perfectly accurate. False-positive and false-negative results are possible.
Active vs. Latent TB: A positive TB test only indicates exposure to the bacteria. It doesn't necessarily mean you have active TB disease that requires treatment. Further testing is crucial to determine if you have active TB or latent TB infection.
Treatment: If you are diagnosed with active TB, you will need treatment with antibiotics. Latent TB infection often requires preventative therapy.

This information is intended for general knowledge and informational purposes only, and does not constitute medical advice. Always consult a healthcare professional for any health concerns or before making any decisions related to your health or treatment.