igg positive igm negativeigg and igm testmycoplasma igg positive igm negativetoxoplasma igg positive igm negativeebv igg positive igm negativecmv igg positive igm negativehsv 2 igg positive igm negativevzv igg positive igm negativeigg and igmebv vca igg positive igm negativeigg iga igm blood testh pylori igg positive igm negative