Ana Walshe, the Massachusetts mother of three who was last seen alive in January, was having an affair with a man in Washington, DC, before she went missing and had spent Thanksgiving with him in ...

An ANA test is a blood test used to help determine whether someone has an autoimmune disorder, such as lupus or rheumatoid arthritis. Learn about the procedure, its risks, and what the results mean.

It’s also called an ANA or FANA (fluorescent antinuclear antibody) test. Antibodies are proteins that your immune system makes to fight off bacteria, viruses, and other germs.