coccidioidin test

coccidioidin test
(for coccidioidomycosis) an intracutaneous test that makes use of the antigen coccidioidin. Because most individuals in endemic areas are skin test positive, this test is not useful in diagnosis. A negative skin test (cutaneous anergy) occurs in many patients with disseminated disease and indicates a poor prognosis.

Medical dictionary. 2011.

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  • test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary

  • coccidioidin — A sterile solution containing the by products of growth of Coccidioides immitis; used as an intracutaneous skin test, diagnostically more valuable in non endemic areas. * * * coc·cid·i·oi·din ȯid ən, ȯi .din n an antigen derived from a fungus… …   Medical dictionary

  • skin test — noun any test to determine immunity or sensitivity to a disease by introducing small amounts on or into the skin • Hypernyms: ↑diagnostic test, ↑diagnostic assay • Hyponyms: ↑Dick test, ↑patch test, ↑Schick test, ↑scratch test, ↑ …   Useful english dictionary

  • spherulin — spher·u·lin sfir yə lən, sfer n an antigen that is derived from a fungus of the genus Coccidioides (C. immitis) while in its endospore producing phase and that is used similarly to coccidioidin * * * sphe·ru·lin (sfērґu lin) a skin test… …   Medical dictionary

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