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Persistent, recurrent infections, or severe infection by microorganisms that do not usually cause severe infection, may be clues that an immunodeficiency disorder is present. Other clues include:
- Poor response to treatment
- Delayed or incomplete recovery from illness
- The presence of certain types of cancers (such as Kaposi's sarcoma or non-Hodgkins lymphoma)
- Certain opportunistic infections (such as pneumocystis carinii pneumonia [PCP] or recurrent fungal yeast infections)
Some tests that indicate an immunodeficiency disorder include:
Other tests may be indicated to confirm specific immunodeficiency disorders.
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