HSV 1/2 IgG and IgM tests are blood tests used to detect antibodies to the herpes simplex virus (HSV) types 1 and 2. HSV 1 is typically causes oral lesions and HSV 2 causes genital lesions. IgG antibodies indicate past exposure or infection, while IgM antibodies suggest a recent infection. These tests help diagnose herpes infections, determine the type of HSV present, and assess the stage of infection. However, interpretation can be complex, and consultation with a healthcare professional is essential for accurate diagnosis and treatment decisions.