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HUMAN PHENOTYPE - ANNOTATIONS

The Human Phenotype Ontology (HPO) is downloaded weekly from http://compbio.charite.de/hudson/job/hpo/lastStableBuild/artifact/ontology/release/hp.obo. The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at http://www.human-phenotype-ontology.org/.
Term:Positive tuberculin skin test
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Accession:HP:6000925 term browser browse the term
Definition:A positive result of the tuberculin skin test suggesting previous expouse or infection with mycobacterium teberculosis. A standard dose of five tuberculin units (TU) (0.1ml) is injected intradermally (into the skin) and read 48 to 72 h later. A person who has been exposed to the bacteria is expected to mount an immune response in the skin containing the bacterial proteins. The volar aspect of the forearm is the preferred site of test. The basis of reading is the presence or absence of induration, which may be determined by inspection (from a side view against the light as well as by direct light) and by palpation. For standardization, the diameter of induration should be measured transversely to the long axis of the forearm and recorded in millimeters.
Comment:The tuberculin most widely used is purified protein derivative (PPD), which is derived from cultures of M. tuberculosis.
Synonyms:exact_synonym: Positive Mantoux tuberculosis test;   Tuberculosis skin test positive


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  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of metabolism/homeostasis 0
        Positive infectious agent test 0
          Positive tuberculin skin test 0
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