49-year-old male presents with fever, low platelet count, nucleated RBCs, and left shifted WBCs. LDH reported to be greater that 1500 U/L. Patient was recently diagnosed with AIDS (CD4 <200)

After histologic diagnosis, a urinalysis was performed for histoplasmosis antigen, which was positive ( >23 ng/mL, reference positive: >0.5 ng/mL)