November 26, 2015
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"The 70,000 diagnostic codes known as ICD-10 made their long and nervously awaited debut in medical practices today.

Claims for any service performed on October 1 and beyond must bear one or more of the new diagnostic codes ” more nume"...


Discontinued Warning IconPlease Note: This Brand Name drug is no longer available in the US.
(Generic versions may still be available.)


The tuberculin skin test is based on the fact that mycobacterial infection produces delayed hypersensitivity to certain products of the organisms contained in culture extracts called tuberculins. The intracutaneous injection of tuberculin in sensitized individuals results in an area of induration, with or without surrounding erythema, which varies in size and intensity according to the dose of tuberculin and the sensitivity of the individual. This cell-mediated or delayed hypersensitivity reaction is characterized by its delayed course, reaching a peak at 48 to 72 hours, and by induration, due largely to cellular infiltration at the site of the antigen injection in sensitized persons called "reactors". Occasionally vesiculation and necrosis may occur. Not all reactors are infected with M. tuberculosis; infection with other species of mycobacteria may cause cross-reactions. The larger the reaction with a given antigenic dose, the greater is the probability that the reaction is specific for that antigen.

Last reviewed on RxList: 12/8/2004
This monograph has been modified to include the generic and brand name in many instances.

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