Using a single serum sample for testing for immunoglobulin G (IgG) Toxoplasma antibodies, differences in sensitivity of the dye test (which measures primarily IgG antibodies) and an IgG enzyme immunoassay were found useful for very early diagnosis of acute Toxoplasma gondii infection.
Toxoplasma Serology Laboratory and Department of Immunology and Infectious Diseases, Research Institute, Palo Alto Medical Foundation, Palo Alto, California 94301, USA.
