The US states of Florida, Connecticut, Wisconsin, Indiana, Oklahoma, Massachusetts, Mississippi, California, New York,[4][5] and the District of Columbia once required blood tests before issuing a marriage license, but such requirements have since been abolished. The tests were mainly used to check for previous or current bouts of syphilis and rubella (German measles); other diseases that have been screened for before marriage in some cases have included tuberculosis, gonorrhea, and HIV, the last of which is the only one of those three that is detectable using a blood test.[4]