I have lupus 3 types in fact very rare one and.
also discoid I have Hughes syndrome ra. Heart murmur. And srogens there are not direct tests ie blood test to Diagnose LUPUS .ITS MADE UP OF SEVERAL blood test s*
AND THEY HO MORE INTO IT DOUBLE STRANGE DNA) so it's not just one blood test. You do get kidney problems with lupus and raises blood pressure cos I have it hope that helps