Histoplasma complement fixationFrom our partner site on breast cancer, MyBreastCancerNetwork.com.
Histoplasma antibody test Normal Values: The presence of no antibodies is normal. What abnormal results mean: Abnormal results may indicate an active histoplasmosis infection. CF antibody concentration is expressed as a titer, which measures the amount of the antibody against the amount of the antigen in the blood. For example, 1:4. advertisement A higher titer usually means more extensive infection. Tests are often repeated 2 to 4 weeks after the initial sample it taken, since antibody production increases during the course of infection. People who have been exposed to H. capsulatum in the past may also have antibodies, often at low levels. However, they may not have shown signs of illness. A repeated test that shows an increase in the titer number would suggest an active rather than prior infection. See also:
References: Deepe GS. Histoplasma capsulatum. In: Principles and Practice of Infectious Diseases. 5th ed. GL Mandell, JE Bennett, R Dolin, eds. New York, NY: Churchill Livingstone; 2000:2718-2731.
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