1. What about the multiple puncture prong test for TB
This is called the 'tine' test, or 'Heaf' test and is rarely used anymore. It involved the use of a device with multiple prongs/pins that were either dipped into a tuberculin solution and then pricked the skin, or pricked the skin through a drop of tuberculin that had been applied to the surface of the skin. The tine test was not considered as accurate because the amount being delivered could not be controlled. Any positive tine tests had to be followed up with the regular TB/PPD skin test.
Only under your doctor's supervision, if there is a need to do so. There have not been enough studies done to clearly document the safety of the PPD solution during pregnancy. On the other hand, since TB can be passed from mother to child through the amniotic fluid during pregnancy, if you are at an increased risk of contracting TB your doctor may want you to have a TB skin test done.
Yes, the FDA (USA) and the EU have recently approved a blood test, recommended within NICE guidelines. Interferon-gamma immunological tests may be used in certain situations such as to confirm a previously positive skin test.
This article was last reviewed on 6 October 2011. | This article was last modified on 31 October 2011.
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