What are tests for stis to do before marriage if virgins?

Depends. In medicine we take things with a grain of salt. I would test for hep c, hiv, syphyllis, gonorrhea, herpes, rubella, cmv, the entire spectrum. You need to know what may affect your children. Some states require a minimal panel of tests before issuing a marriage license. Check with your states department of or licenses to see the minimum requirements fr you.