Cardiolipin is a substance which is found in the human body when the person is suffering from diseases like syphilis, livedoid vasculitis, systemic lupus erythematosus, antiphospholipid syndrome, and spontaneous abortions.Cardiolipin antibodies are a form of antibodies directed against the mitochondria.evels of Cardiolipin. If the levels of cardiolipin antibodies are moderate or high in a test conducted after six weeks, and thereafter if the antibodies continue to persist, it is an indication of a persistent ailment.