Tuberculin Test

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Tuberculin Test

• Tuberculin test,a stool of Tuberculosis
  diagnosis, is one of two major methods to test
  Tuberculin and has replaced many kinds of
  puncture test such as tine test to a large
  extent. The United Kingdom used tine test until
  2005 and then changes to us Tuberculin test. In
  addition, Tuberculin test also have a place in
  Australia, Canada,Hungary, Netherlands, Portugal,
  South Africa and the United States. It has been
  recommended to hospitals by both American
  Thoracic Society and United States Centers for
  Disease Control and Prevention

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Tuberculin Test

• Why need do this Tuberculin test?
• There are mainly three reasons. Firstly, the test
  can provide BCG vaccination with evidence. When
  the result of the test is active, it means that
  the patient has been infected with TB and it is
  unnecessary to vaccinate BCG. If the result is
  negative, the patient needs vaccination.
  Moreover, it can offer the immune action more
  evidence. After 3 months of BCG vaccination,
  generally, it is advised to do the Tuberculin
  test to know that whether organism has produced
  immune action to the BCG. If it is active, the
  BCG vaccination succeed. On the contrary, if
  negative, it need another vaccination. Finally,
  it can be used in diagnosis and differential
  diagnosis. Tuberculin test plays a vital role in
  diagnosis and identification of tuberculosis of
  kids and the elderly. It is regarded as a widely
  used auxiliary examination methods.

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How it works? The action of Tuberculin is
delayed cellular hypersensitivity. This is the
process antigens enter the organism and
sensitize immune T lymphocytes and T lymphocytes
differentiate and produce a lot of new
lymphocytes. When the sensitive organism are
attacked by antigens again, the sensitive
lymphocytes bind with the antigens and lead to
allergic inflammation. The presence is that the
skin around inject site will produce Scleroma and
Blister. If the result of Tuberculin test is
active, it means that the organism has been
infected with Tuberculin or it has got BCG
vaccination. So these patients have some immunity
to Tuberculin. But there are a few people with
weak immunity will be negative in the test or it
will be negative because of technology problems.
If PPD skin test are negative, in most situation,
it means a failing vaccination. In the end, the
immune features of Tuberculosis can be concluded
that immune action coexists contagion and
hypersensitivity. Resource http//www.creativ
e-diagnostics.com/blog/tuberculin-test/