What is tb test bruise normal?

A TB test or Tuberculosis test is a diagnostic test used to determine whether a person has been infected with TB bacteria or not. This test is usually done by injecting a small amount of a substance called PPD (purified protein derivative) into the skin of the arm. If the person's immune system has been previously exposed to TB bacteria, a small raised bump or swelling will appear on the skin within 48 to 72 hours, indicating a positive TB test result.

It is normal to experience some minor bruising at the test site that may cause a mild degree of pain or tenderness. This bruising occurs due to the needle stick and should not be of concern as it is only a minor side effect. The bruising typically resolves on its own in a few days and can be managed by applying a cold compress to the affected area.

In rare cases, more severe bruising may occur, indicating an allergic reaction. If this happens, the person should seek medical attention immediately.

In conclusion, some minor bruising at the TB test site is a normal side effect. However, if you experience severe bruising or other unusual symptoms, seek medical attention right away.