A complement fixation test for Histoplasma antibodies shows a 1:32 titer.This means the patient is negative for Histoplasma infection.

Question

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A titer of 1:32 indicates that the patient's blood sample reacted with the Histoplasma antigen in the test. This suggests the presence of Histoplasma antibodies in the patient's blood, which could be due to past or current infection. Therefore, the patient is not negative for Histoplasma infection.

A Complement Fixation Test for Histoplasma Antibodies Shows a 1:32