text: So her doc is thinking she may have Antiphospholipid syndrome, right? So this disease is diagnosed by checking for anti-cardiolipin antibodies. Antibodies have 2 main types: IgG and IgM. Since her IgG is increased it may suggest a rheumatic disease, like Anti-phospholipid syndrome, or it could be a ton of other diseases, that's why she should see a rheumathologist, s/he is more capable of making the diagnosis of a rheumatic or collagen disease. These include: Rheumatic arthitis, Sjorgen's Syndrome,  Lupus (many types, not all of them ANAS +), and so son.