What does TST mean in UNCLASSIFIED
TST stands for Tuberculin Skin Testing, a procedure used to assess an individual's immune system's response to tuberculosis (TB), an infectious bacterial disease.
TST meaning in Unclassified in Miscellaneous
TST mostly used in an acronym Unclassified in Category Miscellaneous that means Tuberculin Skin Testing
Shorthand: TST,
Full Form: Tuberculin Skin Testing
For more information of "Tuberculin Skin Testing", see the section below.
What is TST?
TST involves injecting a small amount of tuberculin, a purified protein derivative from the Mycobacterium tuberculosis bacteria, into the skin's top layer. Within 48-72 hours, a healthcare professional examines the injection site for any reaction.
Interpretation of Results
- Positive Reaction: A raised, hardened area (induration) of at least 5mm or more indicates a positive reaction, suggesting previous exposure to TB or vaccination.
- Negative Reaction: No induration or an induration of less than 5mm indicates a negative reaction, potentially indicative of no previous exposure to TB.
Limitations of TST
- False Positives: May occur in individuals who have received the Bacille Calmette-Guérin (BCG) vaccine, which protects against TB.
- False Negatives: May occur in individuals with weakened immune systems, such as those with HIV/AIDS.
- Delayed Reactions: Some individuals may develop a reaction after 72 hours, which should be assessed by a healthcare professional.
Essential Questions and Answers on Tuberculin Skin Testing in "MISCELLANEOUS»UNFILED"
What is the Tuberculin Skin Test (TST)?
The TST is a test to check if someone has been infected with the bacteria that causes tuberculosis (TB). It involves injecting a small amount of tuberculin, a purified protein derivative of the TB bacteria, into the skin.
Who should get a TST?
People at high risk of TB exposure, such as healthcare workers, those living in high-risk areas, or individuals with weakened immune systems, should consider getting a TST.
How is the TST performed?
A healthcare professional injects a small amount of tuberculin into the skin on the inner forearm. The injection site is then observed for 48-72 hours.
How do I know if my TST is positive or negative?
If you have been infected with TB, your immune system will react to the tuberculin and cause a raised, hardened area (induration) at the injection site. The size of the induration determines the test result.
What does a positive TST result mean?
A positive TST result indicates that you have been exposed to TB bacteria. However, it does not necessarily mean that you have active TB disease. Further testing, such as a chest X-ray and/or blood tests, may be needed to confirm the diagnosis.
What does a negative TST result mean?
A negative TST result usually means that you have not been infected with TB bacteria. However, it is possible for the TST to be falsely negative, especially in individuals with weakened immune systems.
Are there any side effects of the TST?
The TST can cause local skin reactions, such as redness, swelling, itching, or a small blister. These side effects usually subside within a few days.
Final Words: TST is a valuable tool for assessing TB exposure and infection. However, it is essential to interpret the results in conjunction with other clinical information and consider potential limitations. Further testing, such as a chest X-ray or blood tests, may be necessary to confirm a TB diagnosis.
TST also stands for: |
|
| All stands for TST |