Several commercial kits have been developed for the diagnosis of toxoplasmosis, e.g., enzyme immunoassay (EIA), Toxoplasma immunoglobulin G (IgG) (TestLine Clinical Diagnostics), Human Toxoplasma gondii IgG Rapid Test Kit (Abbexa), Human Anti-Toxoplasma gondii immunoglobulin M (IgM) enzyme-linked immunosorbent assay (ELISA) Kit (Abcam), Human Anti-Toxoplasma gondii IgG ELISA Kit (Abcam), Human Toxoplasma (TOX) IgM ELISA Kit (Elabscience). This evidence concerns the gene CD40LG and toxoplasmosis.