Use

This test aids in the diagnosis of histoplasmosis, an infection caused by the fungus Histoplasma capsulatum. It is particularly useful for detecting the presence of histoplasma antigen in serum, which can indicate an active infection. The test employs a quantitative enzyme immunoassay (EIA) to measure antigen concentrations within the range of 0.19 to 60.0 ng/mL. Results outside this range cannot be accurately quantified. In the context of a positive test, cross-reactivity with other fungi such as Blastomyces dermatitidis, Coccidioides immitis, and possibly Talaromyces marneffei should be considered.